but ever since he moved in,he has had trouble with cars.前面一句为什么不用完成时.

来源:学生作业帮助网 编辑:作业帮 时间:2024/06/18 02:58:18

but ever since he moved in,he has had trouble with cars.前面一句为什么不用完成时.

表示自从那个动作以后
只是表述那个时间点,而不是从那个点到现在这段时间