Mary sits behind Alice.

问题描述:

Mary sits behind Alice.
改句意思不变
Alice sits --------mary 填空

Alice sits in front of Mary .  Alice sits——Mary填空前面的答案就是呀,原句意思是“ Mary 坐在Alice 的后面。” 变同义句就是:Alice坐在Mary的前面。“ 即Alice sits (in front of)Mary.