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?

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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?
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?

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?
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 unexpectedly to see me WHILE I was busy that day.
又是周末了,

since自从

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

选B

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