UC知道选择填空_____ conbersations with friends _____helpful at all.
来源：百度知道 编辑：UC知道 时间：2024/06/22 23:44:12
a. To have,was
b. To have,were
c. Having,wasn't
d. Having,weren't
为什么不能用weren't？
b. To have,were
c. Having,wasn't
d. Having,weren't
为什么不能用weren't？
C.Having,wasn't (应该是conversation吧?)
首先是 Having, 这句主语是和朋友聊天这件事.To have有将来时的意思.
其次是wasn't ,由后面的at all判定应用否定.主语是指一件事,所以谓语是单数.
C
not ^^^at all根本不，一点也不；主语是不定式和动名词，谓语动词用单数。