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?
问题描述：
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
since与过去时间连用，
AB两个选项应该左右结构对等，所以不符，
while一般与进行时连用
句意：他爸爸17岁开始就工作了
P.S.:中考知识点，本题考查连词辨析
答
选B
答
选择C since 是自从的意思，从。。。时候开始
自从17岁开始就开始工作了
希望能采纳，谢谢
答
since自从
答
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...