His father began to work____he was seventeen years old.A as old as B as early as B since D while
题目
His father began to work____he was seventeen years old.A as old as B as early as B since D while
选什么?为什么?
答案
while (==when )是正确的选择.A as old as 的后面不能加句子B as early as的后面不能加句子B since 的主句必须是现在完成时D while (== when) 作为连接词,后面的句子谓语动词可以是be动词.又如:-------- He came un...
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我想写一篇关于奥巴马的演讲的文章,写哪一篇好呢?为什么好
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