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do well in变否定为什么变don't do well in?

来源:学生作业帮 编辑:作业帮 分类:英语作业 时间:2024/07/04 21:41:32
do well in变否定为什么变don't do well in?
还需要分清do, have等是实义动词还是助动词.如:The old man hurt his please be quiet.变否定句:Please don