Seven presidents have been seen__during the past 20 years
来源:百度知道 编辑:UC知道 时间:2024/06/08 23:47:25
A.to come and go
B.coming and going
C.come and go
D.to come and to go
why choose A?
B.coming and going
C.come and go
D.to come and to go
why choose A?
选A
see后面可以跟不定式和ING的,跟ING的时候是刚好看到那个片段,一个瞬间.
不定式是因为从后面的”过去二十年”我们可以看出这个see应该是看到了全过程的,而普通情况下只用原形就可以了,但是本句的前面用了被动”have been”,所以要还原to,写出完整的不定式.
同理还有make sb (to) do sth,平常可以写"She make me cry"省略to,但是有被动的话就要还原省略的to,如”I was made to cry by her"
to come and go意思是“来来去去”,也就是“上台下台”
七任总统来来去去(上台下台)。。。