Mother always stands in the wind __ for you to come back from school.选词填空：wait waits waiting waited横线上为什么要填waiting?这里考查的是哪一个知识点?请说详细点,谢谢.
问题描述：
Mother always stands in the wind __ for you to come back from school.
选词填空：wait waits waiting waited横线上为什么要填waiting?这里考查的是哪一个知识点?请说详细点,谢谢.
答
Mother always stands in the wind _c_ for you to come back from school
.wait waits waiting waited
这是动词ing表示状态，一直在持续
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答
waiting 考察的是分词作状语~在这里用waiting是因为“等”的动作是由mother主动发出的.