Once he starts a job he won't stop until it's finished 语法讲解

问题描述:

Once he starts a job he won't stop until it's finished 语法讲解
时态讲解 为什么用starts 不用start
1个回答 分类:英语 2014-10-11

问题解答:

我来补答
因为句子的前半句是一般现在时,he,she,it后面都是动词加s,只有they,I,you后面是动词本身
 
 
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