If you have really been studying English for so long, it's a

If you have really been studying English for so long, it's about time you ______ able to write letters in English.
A．should be
B．were
C．must be
D．are
答案选B，但是为什么不能选A
it is time that +从句，从句要用虚拟语气，不是有两种方式吗

轻轻的… 1年前已收到1个回答举报

guolongabc 幼苗

共回答了19个问题采纳率：89.5% 举报

对啊，这个是虚拟语气。
你看if从句用的是完成进行时，句式是“从句完成时，主句也用完成”，而你这句的句式应该用were。
句式：if have done，you were。。。。。

1年前

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