____boy Steven is!Yes,by the time he was ten,he_____to do business.A.How clever;will beginB.How clever a;has begunC.What a clever;has beginD.What a clever;had begun.正确答案是C.为啥C的has begin不用改成has begun?不是.我们老师说是C.

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____boy Steven is!Yes,by the time he was ten,he_____to do business.A.How clever;will beginB.How clever a;has begunC.What a clever;has beginD.What a clever;had begun.正确答案是C.为啥C的has begin不用改成has begun?不是.我们老师说是C.
____boy Steven is!
Yes,by the time he was ten,he_____to do business.
A.How clever;will begin
B.How clever a;has begun
C.What a clever;has begin
D.What a clever;had begun.
正确答案是C.为啥C的has begin不用改成has begun?
不是.我们老师说是C.好像说不是完成时.但我不太理解.请高手从语法角度解题.期待中...

____boy Steven is!Yes,by the time he was ten,he_____to do business.A.How clever;will beginB.How clever a;has begunC.What a clever;has beginD.What a clever;had begun.正确答案是C.为啥C的has begin不用改成has begun?不是.我们老师说是C.
老师原话是说,是在steven十岁之后才开始做生意,而不是在十岁之前,要用过去完成时就要在过去的过去,就是十岁之前.那个begin应该是打错叻吧.追加,

who is ____boy under___tree? Steven The doctor is trying to save the ____boy .(die) Jake is a ____boy.He often makes mistakes ____boy Steven is!Yes,by the time he was ten,he_____to do business.A.How clever;will beginB.How clever a;has begunC.What a clever;has beginD.What a clever;had begun.正确答案是C.为啥C的has begin不用改成has begun?不是.我们老师说是C. Steven is very clever.改为感叹句有三个空___ ___ ___boy steven is! The ____boy is my brother.Asleeping Basleep Csleeps Dslept求答案和解释 Steven’s favorite subject is Chinese.(改为一般疑问句） Steven’s favorite subject is Chinese.(改为一般疑问句) Danny in steven of in front is连词成句 Mr Lee is my Chinese ye teacher. Mr Lee is my Chinese ye teacher. Is he young?Ye,__ __. Steven is 15 years old.Jack is 16 years old.Steven ____ ____old as Jack.同同义句 my cousin is a ____boy.A.16 years old B.c.16-years-old d.16-year old steven是什么意思 even steven steven是什么意思?