事实上，有很多动词即是及物动词又是不及物动词，要分辨他们是不是根据句子来分辨。

Question

如题所述

Answer 1

有些动词既是及物动词又是不及物动词，通过不同的句型强调动作的执行方，或者突出动作的承受方。这类动词有close, rip, begin, bend, break, burn, change, decrease, drop, finish, increase, move, open, shut, start, vary, wake，主要是“变化类”动词

例：She closed the door.（及物动词）

The door closed. （不及物动词）

I've ripped my shirt. （及物动词）

My shirt has ripped. （不及物动词） 

当语境能很清晰地表达动作对象时，某些及物动词不需要跟宾语，这类动词有answer, ask, change, cook, dance, drink, drive, eat, fail, park, phone, read, smoke, study, wash, wash up, wave, win, write.

例：I often sing (songs) in the shower.

She plays (the saxophone) beautifully.

Answer 2

及物动词与不及物动词的区别在于后面能否直接接宾语，不及物动词，需要使用介词连接宾语。
但是又有些动词，既是及物动词，又是不及物动词，就只能从句子上去判断了。
For example：
1.He wrote me a letter yesterday.
2.He wrote a letter to me yesterday.追问

谢谢麻烦了

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