When all those present___he began his lecture.A.sit B.set C.seated D.were seaed为什么 AB改为sat就可以 不是不及物动词吗?

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When all those present___he began his lecture.A.sit B.set C.seated D.were seaed为什么 AB改为sat就可以 不是不及物动词吗?
When all those present___he began his lecture.A.sit B.set C.seated D.were seaed
为什么 AB改为sat就可以 不是不及物动词吗?

When all those present___he began his lecture.A.sit B.set C.seated D.were seaed为什么 AB改为sat就可以 不是不及物动词吗?
的确是不及物动词,你不能理解是因为这里作了倒装,将时间状语从句前置了.
正常语序为:
He began his lecture when all those present sat.

一般是sat down ,sat 也可以的,答案D

不可以选A, 应该选D, 因为be seated=sit down=seat oneslf

题意:当所有出席的人都坐下,他就开始演讲。
解析:是不及物动词,所以后面就没加东西。再说,这里用sat也不对,应该用sat down。be seated也是这个意思,seat是及物动词,可以用seat onself来表示坐下。
希望能帮到你,望采纳!

时态:过去时,所以,不用A
B不是坐下的意思;(可以说sat down)
C.seated(使……坐,不能用单独作谓语,可加上themselves,就对了)
D正确答案。
所有出席的人都就座了,他就开始上课。
be seated=sit

D
原句为一般过去时,时态需保持一致。故sat(动词sit的过去式)可以作谓语,但最好用sat down.

D.were seaed

不及物动词也可以做谓语呀。

这题选D,were seated。因为When all those present were seated是时间状语从句。我们知道,从句虽然地位不如主句,但它也是要有主语和谓语的,were seated就是它的谓语。
C项seated是个非谓语动词,不能单独作谓语,必须加上助动词be或系动词remain之后才可以作谓语。
A项的sit虽然也可以作谓语,但它的时态与主句有冲突。

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这题选D,were seated。因为When all those present were seated是时间状语从句。我们知道,从句虽然地位不如主句,但它也是要有主语和谓语的,were seated就是它的谓语。
C项seated是个非谓语动词,不能单独作谓语,必须加上助动词be或系动词remain之后才可以作谓语。
A项的sit虽然也可以作谓语,但它的时态与主句有冲突。
B项不知你写的是什么?如果改成sat,是可以作谓语的,不过后面加个down就更顺,如果不加down,总觉得在语意上缺少点什么。它是不及物动词,不及物动词作谓语是非常正常的。及物动词和不及物动词都可作谓语,及物动词带宾语,不及物动词不带宾语。

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