为什么用if而不用because
为什么用if而不用because
为什么这里要用since和as,而不用because?
为什么这里要用since和as,而不用because呢?
___ you are very tired, take a rest.为什么用Since,而不用if
Let me know whether you love me.为什么用whether,而不用if?
i cannot remember if i posted the letter 为什么后面用过去式而前面不用
在宾语从句中,为什么if 后用any,而不用some?
1..Let's go shopping if it ___tomorrow,为什么用is sunny而不用will b
if you park your car in the wrong place. 这里为什么不用at而用in
Susan is walking slowly as if she were tired问:为什么用were而不用was
为什么第7题用when而不用if?
为什么If you were me、"me"用宾格而不用:I"