英语里有些动词可以兼作及物动词和不及物动词.

　　①兼作及物动词和不及物动词时，意义不变。

　　Shall I begin at once? (begin作不及物动词) 我可以立刻开始吗?

　　She began working as a librarian after she left school. (began作及物动词)

　　她毕业后当图书馆管理员。

　　When did they leave Beijing? (leave 作及物动词)

　　They left last week. (left 作不及物动词) 他们是上周离开的。

　　②兼作及物动词和不及物动词时，意义变化。

　　Wash your hands before meals. 饭前要洗手。

　　Does this cloth wash well ? 这布经得起洗吗?

　　综上所述，有些动词只能作及物动词，不可以单独用，后面必须跟宾语；有些动词只作不及物动词；它们可以单独用，如果后面需要接宾语，动词后面必须加上特定的介词；有些动词既可以用作及物动词，又可以用作不及物动词，但是有时候词义会改变。当使用动词时，一定要分清楚这个动词属于哪一类，然后再根据不同的使用规则使用不同动词。

随堂检测1：P9 Part B 随堂检测2：P100 Part C2

随堂检测3

1. In the last few years thousands of films all over the world.

A. have produced B. have been produced C. are producing D. are being produced

2. - What do you think of store shopping in the future?

　　-Personally, I think it will exist along with home shopping but _____.

A. will never replace B. would never replace

C. will never be replaced D. would never be replaced

3. Even the best writers sometimes find themselves ______ for words.

A. lose B. lost C. to lose D. having lost