I'm to go to Manchester next month.I'll visit Martin...i went there

问题描述:

I'm to go to Manchester next month.I'll visit Martin...i went there
A if B when C once这里应该选CAB为什么不对呢?求高手!

I went 表示已经去过了.
那么IF就不对了,IF是如果的意思,就是还没去.
WHEN也不对,用WHEN地话,应该是之前或者之后或者同时,那么之前的话, I WENT THERE就不对了,之后的话,应该是I GO THERE.同时,应该是I WILL GO THERE.s
所以选C