Question

It was _____ who helped Tom out when he was in trouble. A. I B. me C. us D. ours

Answer 1

答案应选 A
人称代词作表语时,一般用宾格,特别是在日常会话中。例:

“Who is knocking at the door? ” “It's me. “谁在敲门?”“是我。”

在很正式的英语中也用主格,可以说:It is I.

只有一个词的句子用宾格:

“Who wants to try?” “ Me.” “谁想试一试?”“我。”

在“it + be + 代词 + 定语从句”结构中,用宾格是随便的说法,用主格是非常正式的说法

例:
It was me/ I who broke the window. 是我打破了玻璃窗。

为了避免太正式或太随便,我们可以用别的句式来表达。例:

I was the one / person who broke the window.

Answer 2

选A

追问

为什么啊？是强调句吗？

追答

因为who一般在句中是修饰主语的，而其他的都不是主格

Answer 3

ok

Answer 4

B. ME