Mr Li _______(teach) us Maths since I _____(come) to this school.

如题所述

我认为应该是....
Mr Li has taught (teach) us Maths since I came (come) to this school.
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第1个回答  2011-04-21
has taught/has been teaching, came
第2个回答  2011-04-21
teached have come

后面是现在完成时 前面是过去时
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