PPT预览
情态动词should 应该，should后跟动词原型，否定式shouldn't 不应该。
First, our parents will visit.
Next, they'll ...
Then they'll ...
After that, they'll ....
Finally, they'll ...
展开
情态动词should 应该，should后跟动词原型，否定式shouldn't 不应该。
First, our parents will visit.
Next, they'll ...
Then they'll ...
After that, they'll ....
Finally, they'll ...
