为什么 They left last week.这句话中 left 是不及物动词不及物动词应该有介词连接后面为什么这里没有 last week是副词么?

来源：学生作业学帮网编辑：学帮网时间：2024/07/08 12:27:43

首先,不及物动词的定义是这样的：不及物动词后不能直接跟有动作的对象（即宾语）.若要跟宾语,必须先在其后添加上某个介词,如to,of ,at后方可跟上宾语.具体每个动词后究竟加什么介词就得联系动词短语了.
在本句话中,并没有跟动作的对象.他们上周离开了,那left的对象就应该是一个地址.
比如They left China last week.并不需要to,of 等
你可以自己加对象试试就知道这个是不是不及物动词了.
至于last week,跟这个left 没有多大关系,是副词.用来形容这个动作的.跟
They left America quickly.里面的quickly是同一个作用.

他上周离开了
left 不及物动词
望采纳！

没人规定不及物动词后面必须跟介词啊！

left是leave的过去式，leave是可以做、及物动词和不及物动词。在这里没有说离开的地方，即没有宾语，所以说他是不及物动词，这里没有宾语，所以无需介词，last week指的是时间做状语，不可能做left的宾语。

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不及物动词后面可以什么都不接也可以接介词
比如laugh，smile, cry,
He smiled.就可以。
They left. 也可以。
last week 不是副词，是时间状语。
They left happily.中的happily才是副词。
副词的特征是“形容词+ly”结尾的词，比如，carefully,loudly,rudely,
形容词是用来形容“名词”的，而副词是形容“动词”的。
last week, yesterday, in the morning,都是时间状语
in the office, at home,in the park, 就是地点状语

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在表示时间副词中，today，tomorrow，yesterday，next ~，last ~，this ~，~ ago，~ before等前面不加介词

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为什么 They left last week.这句话中 left 是不及物动词 不及物动词应该有介词连接后面 为什么这里没有 last week是副词么?

为什么 They left last week.这句话中 left 是不及物动词不及物动词应该有介词连接后面为什么这里没有 last week是副词么?