she was three when her parents immigrated to america in 1999

问题描述:

she was three when her parents immigrated to america in 1999
这个为什么要加to呢 什么时候要加to?
1个回答 分类:英语 2014-12-10

问题解答:

我来补答
immigrate是不及物动词
为了要说明 移民“去”美国
就要to 表明方向
 
 
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