小学三年级英语日记大全【实用20篇】

我不是诗人,不能吟出优美的篇章;不是歌手,不能唱出优美的乐章;更不是画家,不能绘出似幻似梦的图画。就算能，又有谁能描绘得出我故乡的美，秋的美，我的故乡秋的美。 I am not a poet, you cant chant a beautiful chapter; not a singer, you cant sing beautiful movements; it is not a painter, you cant draw a dream -like picture.Even if he can, who can depict the beauty of my hometown, the beauty of autumn, and the beauty of my hometown.

秋天，在有些人的眼中，落叶飘飘，凉风习习，这是一个荒凉的季节，就连蝉儿也在这个季节中静静的死去，有着“无边落木萧萧下，不尽长江滚滚来”，的悲景，也有着“艰难苦恨繁霜鬓，潦倒新停浊酒杯”的哀情。但我要赞扬的，还是秋天，是故乡的秋天，秋天，是丰收的季节，是喜庆的季节，是一年中最美的时候。

一阵阵秋风吹过，漫山遍野的绿叶沙沙沙的摇曳着，像大自然演奏的美妙音符，像水中的波纹，轻轻的荡漾耳垂，回荡在森林里，随风飘逸。故乡的秋，叶子是绿色的，翠绿的碧叶，流露出碧玉的光泽，苍翠欲滴，饱满，仿佛轻轻一碰，便能从中流出绿色的液滴。在阳光下，闪烁着碧玉般的光泽，柔和而不刺眼，暖暖的。这种暖意，甚至能瞬间穿透你的心田，温暖你脆弱的心灵，滋润你心中的甘草，望着这美景，有一种赏心悦目的感觉。

走进田野，迎来缕缕瓜果的清香，这是大自然的体香，不是任何的香水能比拟的，这是纯天然的气息。我被香气吸引着，远远望去，那是一片绿油油的瓜地，一个个圆滚滚的西瓜就藏在其中，个个大如篮球，也有黑美人，就如一个个躺在田中的精灵。瓜农叔叔们穿梭其中，，瞧一瞧，瞧一瞧，摘下一个又一个成熟的合格的西瓜，左手搂着一个，右手抱着一个，中间还夹着一个，脸上洋溢着丰收的喜悦。

走过去，热气好客的人们当即往你们的怀里塞满一个又大又甜的西瓜。瞧一瞧，西瓜“咚——咚”作响，一刀下去，“通——”的一声，声音清脆响亮。鲜红的果汁从果肉中渗了出来，像新鲜的血液，轻轻的咬一口，甘甜可口，正如秋天般的清爽，透心的凉，让人感觉轻飘飘的，吃了一口还想吃，让人留连忘返。躺在田野里，树荫下，一边赏着秋色，一边吃着西瓜，唱唱歌，聊聊天，这是再美妙不过的事了。

我的故乡四季如春，还有一个瓜果飘香的“春天”，能在这里生活，是再幸运不过的事情了，它是南海的一颗明珠，虽算不上人间仙境，却也是世间少有的一片净土。

我的故乡是美丽的，是富饶的，故乡的秋，是丰收的季节。

i’m going to the sun on my holiday. i will go there by a spaceship. i will take a big blue spaceship。then i’ll pilot the spaceship to the sun. the sun is very hot. so i put on the super-shirt. in the morning, i will have some sun burger for my breakfast.

at eight o’clock, i will play with my friends there. they are super dog and super girl. super dog is white and black. super girl is very clever. super girl and super dog like to play with me. so i play with them for forty minutes. then i do my homework in my little red room on a small blue table. after my home work, i will have my lunch. i will eat sun salad. i will make some red toy bear to the sun babies. i will have red juice, red fish and red rice. all the things are red. then i need a lot of water on the sun because the sun is too hot. so i will walk to the spaceship. i’ll pilot the spaceship to the earth.

this is a good holiday on the sun.

七月中旬，我跟妈妈一道回了湖北老家，快乐的暑假生活开始了。

经过一晚上的长途跋涉，火车卧铺转城际动车，又坐了半小时的小，到家的我眼花，幸亏搬到了新家，不用再跑太远的地方，否则我肯定会吐的。

刚进家门，我就迫不及待跑去打开冰箱，找我梦寐以求的冰淇淋，这是每年暑假的惯例，爷爷都会为我准备，满满的一冰箱冰淇淋;今年有堂弟分享，爷爷又特意准备得更多，谁叫我们是他的心肝宝贝呢!

可口的冰淇淋虽然美味，两岁的小可爱妹妹，更令人陶醉，她能陪我一起、跳舞、躲猫猫，还到楼下去玩翘翘板、滑滑梯，睡觉的时候爬上我的床，陪我一起蹦床疯闹。半年多的分离，阻隔不了我们半天就打成一片，毕竟姐妹情深嘛。

比起紧张繁忙的深圳上学生活，老家的暑假要惬意许多。爷爷奶奶总是拉着我：一会儿又长高了许多，一会儿又晒黑了几分，吃不完的家乡美食，聊不完的乡里土话，勾起了我的童年记忆，老家的留守幼儿园生活，难以割舍的是和爸爸妈妈骨肉亲情，现在终于可以和他们一起在深圳上学了，但又亏欠的是爷爷奶奶养育之恩!

短暂的假期正一天天过去，快乐的童年时光一去不复返，“我不想……我不想长大……”但人要学着成长，勇敢面对未来的精彩人生!

Today, I still went to my mothers office. My mother was very busy, so was my father. They always live in Beijing. They must get up early. Because they will manage the factory. So I know they are very laborious. So I should save my money. Also I should help them. Although I cant do something useful, but I think I should share the work with them. I am one of my family member. In the future, I will take a job and work. Its time for me to begin to learn how to work.

今天早上，我突然发现我的一颗牙齿向外翘了起来。我赶紧让妈妈帮我看一看，原来是我的一颗新牙齿长了出来，而乳牙却没掉下来。于是，妈妈决定中午带我去拔牙。

中午放学后，妈妈带我去拔牙的路上，我心想：拔牙有什么好怕的，我可不怕!可是到了医院里，我闻见一股异味扑鼻而来，我害怕极了!但我还是勇敢地走到了医生面前，医生让我坐在椅子上，对我说“：小朋友，别害怕，一下就好了，如果你害怕我就给你抹点麻药。”听了医生这番话，我立马不害怕了。于是我说：“不用了，叔叔，我一点也不害怕!”然后医生开始给我拔牙了，我当时非常害，紧闭双着，只听“咄”了一声牙齿就被拔掉了，然后医生把棉花垫在牙齿上。

回家的路上我心想：原来拔牙一点也不疼。

It was sunny today. I was excited. I got up at a quarter to seven.

I made a appointment to meet at nine o’clock. After I had my breakfast, I went to the Wanjia Market . It was hot outside. When I arrived, my friends didn’t arrive. I waited for him in front of the KFC’s door.

I haven’t seen them for a year. And in a year, we didn’t come into contact with others frequently. About ten minutes left, my friends arrived one by one. After we greeted,we went to play basketball in Liwan Gymnasium. The match last for tow hours.Oh!I fill very happy today!

The environment has been polluted badly today and the nature punishes the

human being by all kinds of disasters, such as the heavy haze in Beijing, which

damages people’s health. World Environment Day is on June 5th. It pays attention

to call for the public to make an effort to bring the world a clean

environment.

Look at the pollution around us, which exists everywhere. The cars release

the gas which pollutes the air and the rubbish can be found in every corner of

the street. All of these daily incidents hurts the world we live. Especially the

factories, they release the heavy smoke and make the sky becomes dark. What’s

more, the wasted water flows to the clean river.

Though the government has made some action to punish the businessmen for

releasing the polluted sources, they still dare to take the risk of earning the

biggest profit. If we hurt the environment, it will hurt ourselves, because we

live together. The polluted environment threatens our health. If we want to live

the comfortable life, then the only way is to be nice to the environment.

上周末，天气晴朗，爸爸妈妈带我去了乡下爷爷奶奶家，那里最吸引我的就是农田。

我和妈妈先跑到田野里，因为前几天下过雨，泥土还是非常潮湿的。妈妈尝试着踩了一下泥土，脚一抬起来泥土就出现了一种脚印，而且是一个很深很深的脚印，鞋子也粘满了泥土，我和妈妈都，吓得不敢动了!这时爸爸出现在眼前，他把双脚踩在田地的边缘上，轻轻一跳，就跨过去了，原来每一件事情，只要动动脑筋就一定能想出办法。

农田里的东西可真多啊!小菜苗探出小小的脑袋，伸展绿色的身姿;玉米吐出红红的胡须;最有趣的是毛豆了，颗颗饱满，都把枝干压弯了腰呢!我用双手紧紧握住枝干，用了九牛二虎之力才把毛豆拔了起来，但摔了个四脚朝天!

田园生活太有趣了!

国庆是全中国人民最重要的日子，它是代表中国的崛起的日子。每当到了这一天，我便会想无数人为了这一天的到来而奋斗，有的还为此而牺牲。但是在面对这些困难的时候，他们还是迎了上去，把困难化解。

在第一届国庆的时候，全国人民都在等待一个令大兴奋的消息，许许多多的人在天安门广场上等待着，当毛主席上了演讲台的时候，大家特别兴奋，毛主席在最后说出“新中国成立”的时候在大家都在欢呼，每个人都在这一刻尖叫起来。2012国庆节日记150字

国庆是我们新中国成立的日子，是我们永远怀念的日子，是无数人为之奋斗的日子。

I have many cousins. I like Stella best. She is a pretty girl. She likes eating cucumbers , eggplants, cabbages… She doesn’t like eating eggs and milk. So she is very short.

Stella is an excellent student . She is the monitor of her class. She likes studying and she studd. So she is always the top student in her class.

In this summer holiday , I spent a very happy time with her in Sichuan . I often miss her very much.

I like my cousin best!

爸爸、妈妈，在我刚刚睁开双眼时，看到的是您们的脸，是您们给了我们生命，今天，让我在这里对您们说一声：“爸爸、妈妈，您们辛苦了!”

我记得，在我小时候，我的体质很虚弱，是不是就生病，有一天我发烧到39度多，是爸爸把我抱到了医院，那时是半夜，您寸步不离的守在我的身边旁，无微不至的照顾着我，第二天，您眼角上不满了血丝，显然是您一夜没睡。

我刚上二年级，爸爸出差了，妈妈，您那天恰好生病了，我自己去了学校，在学校里，我担心您，我也在想，今天中午，我只好吃方便面了，我从学校回来，闻到了一股饭的清香，我推开门，发现妈妈已经把饭做好了，您慈祥的对我说：“宝贝，妈妈不舒服，只做了一些粥，炒了个鸡蛋，你总吃方便面，怎么能行?”我的心中暖暖的。

爸爸，妈妈，在生活中，我有时和您们吵架，不听您们的话，我感到很内疚，我想对您们说声“对不起”，您们对我的爱就像贝壳，用心就能发现，无处不在，口渴时的一杯水，一句训斥，这都是您们对我的爱。

现在，我要用我能做的一切来回报您们，在您们疲倦时的一杯茶，做一些力所能及的家务，我要学会感恩，感谢您们的爱，用我自己的方式，现在，我不能用金钱来报答，但是我会用我能做到的来报答您们的爱。

It is neither genius nor extraordinary ability that gives us power to deal

with and overcome whatever hardship one is confronted with.2、As in the picture,

the athlete is running, with a determined spirit, towards the finishing line in

order to obtain the gold medal, considered as the symbol of success for any

sportsman.I most like the human is Liu Xiang 。 the famous athlete Liu Xiang

striding forward in the Olympics Games in Athens. Determination is universally

regarded asa highly praised quality. It is neither genius nor extraordinary

ability that gives us power to deal with and overcome whatever hardship one is

confronted with. It is this kind of spirit that enables us to endure the

difficult moments and attain our goals.

The determined spirit gives us light when we are in dark moments and

encourages when we are frustrated. With this quality, no enemy can overwhelm us,

and noobstacles can stand in our way. There are many examples of success being

achieved solely through the strong will of the spirit. As in the picture, the

athlete is running, with a determined spirit, towards the finishing line in

order to obtain the gold medal, considered as the symbol of success for any

sportsman. It is determination that leads to success. ?

It is not easy to cultivate this determined spirit. To do this, we must

establish a firm faith in our actions and be ready to devote ourselves to them.

We must boldly go through trials and hardships to train our will so as to get

rid of the weak points of our moral character. Around us, there are quite a few

people with this intense determination and spirit and set a good example for us

to follow.

我的爸爸是肿瘤放疗科的医生，他在成都工作，一周才回家两次。

他是一位富有爱心的医生，面对的全都是癌症患者。有时候，他会收治小朋友。对于小患者，爸爸可有耐心了，他会哄着他们做治疗，还自掏腰包给他们买礼物。每当这时候，我就打心眼里佩服他。

爸爸也是一个双重性格的人。每次回家，他都会给我一个大大的拥抱，开心时他会逗我笑，还用他的胡子扎我。可老爸生起气来比犀牛还恐怖，这不，辅导我的作业才不到两分钟，就听见了他的“河东狮吼”：“叶澜昕，还不抓紧时间!”吓得我赶紧坐好，埋头苦干起来。

爸爸特别喜欢球类运动，尤其是足球。他是他们医院足球队的一员。一天下午，他正在昏昏欲睡，突然接到电话说有足球比赛，马上来了精神，从床上蹦下来，火速收拾好装备，拿着车钥匙冲出了家门。

这就是我的爸爸，一位富有爱心的医生，一位爱我又很威严的父亲。我爱我的爸爸。

This years summer vacation was most enjoyable. I spent fifteen days helping my grandparents doing farm work in the countryside， where I saw mountains fields covered with green plants. Sometimes I went swimming in the river to the west of the village， the water in which was quite clear.

今年的暑假是最愉快的。我花了十五天帮助我的爷爷奶奶做农活在农村，在那里我看到了山区域覆盖绿色植物。有时我去游泳的河以西的村庄，水是很清楚的。

I kept a diary every day. Besides doing farm work， I help the children in the neighborhood with their lessons. All of them showed interest in English. They could read write wellthey could hardly understand simple English. So every day in the morning I spent about two hours helping them improve their listening spoken English. They all made great progress. Their parents all thought highly of me. I now realize that knowledge is very needed in the countryside.

我每天写日记。除了做农活，我帮助邻居家的孩子做功课。他们都对英语的兴趣。他们能读书写字wellthey几乎听不懂简单的英文。所以每天早上我花了约两个小时帮助他们提高他们的听力口语英语。他们都取得了很大的进步。他们的父母都以为我。我现在意识到，知识是非常需要在乡下。

我爸爸原是手机控，爸爸最近买了一台新手机，就更加喜欢玩手机了。周未常常是一整天，除了吃饭，就是躺在沙发上玩手机。晚上，我经常看到爸就看手机到深夜。

一天，我正在写作业，发现笔芯断了，我就开始削笔刀找了半天也找不到，我就去找爸爸：“爸爸，爸爸，你能帮我削下铅笔吗?我的卷笔刀不见了!”我站在他身边撒娇似的喊着。可他头也不抬的，一双眼睛直勾勾的盯着手机屏幕，时不时还会发出“呵呵”的笑声。我只好自己拿起小刀削铅笔了。

我不小心弄到手，流血了。我大叫一声：“好疼。”爸爸还是一动不动的，我只好自己用纸巾轻轻地擦掉血，用创口贴包扎伤口。妈妈回来，看到一边在玩手机的爸爸，又看到我手里有伤口。她就问我伤口是怎么弄的，我就把事情的经过告诉给妈妈，妈妈说：“宝贝，你帮你爸爸改掉看手机的习惯。”

我灵机一动，想去了一个好办法，就把爸爸平时看的抖音、新闻给删掉的，永久卸载，爸爸过了一个月，果然，爸爸就把看手机的习惯都戒掉了。家里又恢复正常，他一下班就开始辅导我写作业。

Parents love is the most selfless and pure love in heaven. Birds do not fly, can only open his mouth to her mother to feed food, birds mother all the way for the birds to find food, but they could not bear to eat, this is called maternal love my mother is the same, she never stopped from my birth Love for me, when I was still toddler, not only can not share for the mother, but will only add endless trouble to her, such as: broken vases, playing a knife to hurt their own, and so often, mom Always distressed endless, but never any blame and blame. This is great maternal love. -

My mother gave me a lot of love, but sometimes I can not understand, or even misunderstanding ... ... Once, my mother let me do a few math problems, there is a question I puzzled, go to ask her mother, she told me Most of the day I still do not do, my mother was his head in his hand, secretly lost tears, although I did not cry out the sound, but the tears or a string of string down, I think: mother too do not understand Our childrens mind, and play is the childs nature, learning is secondary, why do you see so heavy mother? -

Another time, I made a dish, I think: Although children do not eat rice but the parents will say delicious. Can be a mother to eat a mouth to cover his mouth to the toilet, I asked her: "delicious?" "Not good!" Mother replied. The voice faded, I cried and said: "Why, other peoples mother to eat their own daughter to do the dishes, said delicious, but you said no good, I have no confidence." Mother listened to earnestly said: "If I want to make you happy and not tell the truth, you do not know the truth, become arrogant, so you not only can not progress, but will regress." I thought, or do not understand why my mother would think so, It is not the kind of person ah

放暑假的时候，全家人一起坐火车回东北，火车要开两天才能到达长春的爷爷家。在爷爷家住了一段时间后，我们要到小姨姥在双阳的新家里住，我开心极了。

让我最开心的是我的大舅姥爷，他总是带着我跟他去钓鱼。我跟着大舅姥爷来到离家不远的鱼池，鱼池旁边是美丽的荷花池。荷花池里长满了荷叶和荷花，荷花的花瓣是粉红色的，花心是淡黄色的，就像一个鸡蛋黄一样，淡淡的、软软的。在池塘旁边种着好多的小野菊花和小草。

我和大舅姥爷把钓鱼的用品拿出来，就开始钓鱼啦。过了一会儿，钓鱼的鱼竿儿动了，水面上有大大的波纹。“鱼上钩啦!”，大舅姥爷说着，把鱼竿甩了上来，鱼就掉到了地上，活蹦乱跳的。大舅姥爷说，这条鱼可是有三斤多啊。我大吃一惊，我们钓了这么大的一条鱼呀，能和大舅姥爷一起钓鱼我真开心。

During the winter vacation, I was idle at home and went to grandmas home to play.

When she came to grandmas house, I saw that grandma was making a fire. I saw it soon, and I wanted to try. So I said to the granny who was burning, "grandma, let me make a fire!" Did not think of grandma unexpectedly categorically said: "no.!" Do not change this trick: "grandma, my grandmother, let me try it, just a minute!" Grandma could not resist my persistence, readily agreed. So I took the match immediately and sat in front of the kitchen.

"Chi", lit, a gentle and brilliant light. I immediately took a straw like something lit into the kitchen. Im afraid the fire will go out soon, so I put a lot of firewood in. "Wow," the fire suddenly busy up, but soon went out, but also emitting a smell of smoke, choking me coughing. So I said, "the country and the city are not the same, and even a gas stove is not!" After that, I lit a match and threw it in. But it soon went out. The smoke not only did not dissipate, but it was thicker. I cant eat this time, choking out of the kitchen. Grandma washing meters, see my gray appearance, smiled and said: "who said the fire must be good?" As my grandmother said that, my head went down involuntarily. But I immediately regain confidence: "a word can never be withdrawn." said we should do. I must have a good fire! " So I went to the front of the kitchen, and then, I learned the old people to take a fan with a fan. There was no smoke, but the smoother was smaller. Not easy to fan the fire, open the pot to see, the rice just put in. So I had to pick up the fan and fan it again.

When I went home that day, my face had already become a big face in Beijing Opera!

“生命的宽度在于自由，一个人获得了自由，生命也就有了真正的价值” "The width of life lies in freedom, a person gets freedom, and life has real value"

青春期伊始，当我把这句话作为信仰，并且试图追求它时，整个世界是与我做对的。我曾带着疑惑去询问长辈，老师，得到的答案永远是否定;我以为朋友能懂我，当他们觉得我在开玩笑时，我感到了忧伤。

青春期幼嫩的芽儿经不起摧折，我只能选择沉默，却不安分。

我相信生命，更追求自由。至少那时的我，无所畏惧。

在一次次的叛逆与逃离后，我的父母开始重视这个问题，尽管他们不能理解我的勇气从何而来。

他们把我带到野外，给了我一顶帐篷和一只旅行包。爸爸对我说：“我们愿意给你足够的自由，你将会在这里待到明天。也许明天我们都会有新的想法。”

“主意不错。”我没有表现出恐惧，并能清楚地看到他们脸上的惊讶与失望。

在说明书的指导下我很容易就搭好了帐篷，不错的开端。接下来很长的一段时间都很无聊，可新鲜感还未消散，我还是感到很惬意。我坚信在这难得的一天我会过得很精彩。正值盛夏，青草绿的发油，草香混着泥土朴实的气息让我昏昏欲睡，我斜躺在草丛里，看着天空绵密的

云，微风像温柔的手轻抚过发丝，脸颊，我从未觉得如此自由过，甚至在很多瞬间，都能

体会到灵魂漫入云端的喜悦。

余晖万丈过后，天边星子如乱棋。第一个独自在外的夜晚，夜空繁星璀璨，熠熠生辉。想唱首好听的歌，或者静静享受着静谧，可当潮湿的水珠打在我的脊背，蚊虫开始叮咬我时，我越来越烦躁不安。无心再享受，钻进了帐篷之后我的身体开始发冷，妈妈为我准备的薄毯披在身上，我发现我开始想念父母了。

我怎么能说后悔呢?尽管我已经开始后悔，可是我并不想承认。

野外的夜晚并不寂静，田野里，小河边，四周，到处都虫鸣蛙叫。我的听觉，视力比平常好像发达了数千倍，偶尔树枝折断的声音都能引起我的警惕，映在帐篷上的草丛被风吹动的影子好像快要把我吞噬。胆战心惊，我不能停止一些想象。我想象着月亮真的像电影里一样变化，被一朵暗云遮住，又逐渐变得半遮不遮，可是透出的光却红的诡异;我想象着远处小山包突然慢慢移动，一点一点逼近我。。。。。。

我害怕了。

我发自内心的后悔了。我痛恨自己的愚蠢，无知，任意妄为，为自己带来了天大的麻烦。其实我并没有胆量，更不懂如何经营自己的生命。盲目追求的自由，毫无意义的生命。。。。。。自由与生命，是没错的，错的是我的偏执。有什么生命，比家人，朋友在身边，夜晚不会恐惧，琐碎的小事不会让自己无聊更有价值，更自由呢?

我忘记了那个夜晚有没有睡着，我只记得看到第二天的太阳，感觉心是满足的，看到父母的笑容，感觉生命是完整无憾的。

那一天，不想忘记。

我发现现在的人们，无论是大人还是小孩，都喜欢玩手机，这些人被称之为“低头族”。

有一次，我和爸爸妈妈一起参加我朋友的生日会。本该热热闹闹的生日会，大人们聚在一起聊天，讨论工作，话话家常。可是今天的他们有点儿不对劲，平时不该有的习惯暴露了出来。他们拿起手机，有的在刷朋友圈，有的在刷微博，该有的在看视频，都低头不语。几个大哥哥甚至被这气氛给传染了，他们也开始玩起了手机游戏。诺大的餐厅里回荡着我们几个小孩嘻嘻哈哈玩闹的声音。

手机本来是工作和生活中必不可少的物品，可是有些人却过度依赖手机，整天和它形影不离，随时随地都会掏出手机，哪怕一条信息都不能错过。手机确实给我们的生活带来了便利，但同时也会造成很多危害，比如长期低头会对我们的颈椎和背部产生很大的影响，如果大家都低头看手机，就会减少了交流和沟通，亲情和友情就会越来越淡!

我认为大家应该适度的使用手机，手机上可以发明一种功能，每当使用手机三十分钟，手机便会自动关闭。

让我们放下手机，看看那碧蓝的天空，壮丽的山河。让我们放下手机，拉近人与人之间的距离吧!

In China, the subjects that students learnt are necessary. They can learn special classes when they enter university. Sometimes I think it will be perfect to have the special class in middle school. On the one hand, students can learn more things besides the necessary subjects. They can develop more practical skills. On the other hand, students can cultivate their interest by learning something different. Though it is a little hard to open special classes, because education pays attention to scores, I believe that someday more special classes will be open, as the class reform calls on people to pay attention to the development of student mind.

在中国，学生所学习的科目都是有必要的。当他们进入大学以后，他们可以学习特色课程。有时我觉得在初中开设特色课程是非常好的。一方面，学生除了必要科目之外还可以学到更多的东西。可以发展更多实用技巧。另一方面，学生可以培养他们的兴趣，学习不同的东西。虽然因为教育注重分数导致开设特色课程有一定难度，但我相信总有一天将会开设更多的特色课程，因为教育改革呼吁人们关注学生的思维发展。