Unit 3 Topic 1课题Unit 3 Topic 1 Section A课型探究课课时Let sb do sthEg Let us go homeYd better (not) do sth 你最好（别)做某事Eg. Yd better _(stay) at home Yd better _(not smoke) here.(2) I am interested in playing basketball. 我对打篮球感兴趣。语法：be interested in 对感兴趣 后加名词、代词或动名词举例：He is interested in books(名词） She is interested in him(代词） He is interested in _ (play) the piano.（动名词）拓展；interested 和interesting 的区别Interested其主语一般是人，可做表语，不作定语；interesti
