问题描述：
英语部分倒装句的时态问题?
So difficult ______ it to live in an English-speaking country that i determined to learn English well.
A.I have felt
B.have I felt
C.I did feel
D.did I feel
这是句部分倒装,所以先排掉AC,但是为什么不是B呢?时态是怎么搞的?
So difficult ______ it to live in an English-speaking country that i determined to learn English well.
A.I have felt
B.have I felt
C.I did feel
D.did I feel
这是句部分倒装,所以先排掉AC,但是为什么不是B呢?时态是怎么搞的?
问题解答：
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