情态

这类错误有以下几种情况：①情态动词后的动词使用过去时态;② 情态动词后的动词加“s”③ 情态动词后的动词加“ing”④”will”后面的“be”动词用“am、“is”或“are ”;⑤助动词“do”后面的动词用动词过去时态;⑥。助动词“do”后面的动词第三人称单数加“s";⑦ 助动词“do”后面的动词加“ing”等。例如：

a. I could did my homework.

b. He may goes to school by bike every day.

正确的句子：

a. I could do my homework.

b. He may go to school by bike every day.

1.would rather do...than do...

宁愿……，也不……

【例句】She would rather fail than cheat in the examination.她宁愿考试不及格，也不愿作弊。

2.cannot but do... 只好做……

【用法】but后的不定式要省略to。

【例句】We cannot but wait until Jane comes.我们只好等到简来。

3.cannot/can never...too...

再……也不为过，越……越好

【例句】You cannot be too careful to cross the road.过马路时再怎么小心都不为过。

4.主语+used to/would+do... 过去常常

【例句】I would go swimming in this river when I was young.我小时候常在这条河里游泳。

5.had better (not) do... 最好(不)做……

【例句】You had better not wait for them.你最好不要等他们。

6.must have done... 一定/准是做过……

【用法】表示对过去情况的推测，只用于肯定句中。

【例句】She knows the story very well. She must have read the book.她对这个故事很熟悉。她一定读过这本书。

这类错误有以下几种情况：

①情态动词后的动词使用过去时态;

② 情态动词后的动词加“s”

③ 情态动词后的动词加“ing”

④will”后面的“be”动词用“am、“is”或“are ”;

⑤助动词“do”后面的动词用动词过去时态;

⑥助动词“do”后面的动词第三人称单数加“s";

⑦ 助动词“do”后面的动词加“ing”等。例如：

a. I could did my homework.

b. He may goes to school by bike every day.

正确的句子：

a. I could do my homework.

b. He may go to school by bike every day.