求解一道初中英语单项选择——Did you father begin to work he was very young?——Yes,he began to work the age of seven.正确答案是when,at我想问的是,第一空为什么不能用since?

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求解一道初中英语单项选择——Didyoufatherbegintowork____hewasveryyoung?——Yes,hebegantowork____theageofseven.正确答案是wh

求解一道初中英语单项选择——Did you father begin to work ____he was very young?——Yes,he began to work ____the age of seven.正确答案是when,at我想问的是,第一空为什么不能用since?
求解一道初中英语单项选择
——Did you father begin to work ____he was very young?
——Yes,he began to work ____the age of seven.
正确答案是when,at
我想问的是,第一空为什么不能用since?

求解一道初中英语单项选择——Did you father begin to work ____he was very young?——Yes,he began to work ____the age of seven.正确答案是when,at我想问的是,第一空为什么不能用since?
since应该搭配用完成时,如Have your father began to work since .

since是现在完成时的标志词，有出现“主+have+done”结构或“It‘s +一段时间跨度+since+一般过去时的句子”才出现since。没有以上句子结构，就不能用。第二句中的It‘s=It have。

求解一道初中英语单项选择——Did you father begin to work ____he was very young?——Yes,he began to work ____the age of seven.正确答案是when,at我想问的是,第一空为什么不能用since? 英语单项选择求解, 英语单项选择求解英语单项选择求解求解英语单项选择英语单项选择求解求解英语单项选择求解英语单项选择求解英语单项选择求解英语单项选择求解英语单项选择求解英语单项选择求解英语单项选择求解英语单项选择求解英语单项选择求解英语单项选择求解英语单项选择啊初中英语提优试卷单项选择