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【语法】 　　学会使用情态动词had better, should, ought to　 　　 　 You had better get some rest. 　　 　You had better not eat fruit that is not ripe. 　　 　You should/ ought to be careful with fruit. 　　 　You should not / ought not to eat so much junk food. 　　 　 You ought to / should read this book. It is very good. 　　　【词汇与短语】 　　keep up with　 　　ought to　　　plenty of　　 　 contain　　　 　be harmful to　　be good for　 　　 base on　 　　make choices　　 offer advice　　go for　　lose weight　　 　 be well prepared for　　 behave 　　function　　 　　二、词语解析 　　ought to 　　①表示责任或义务 　　You ought to say you’re sorry.