译林版六上英语Unit 7 Protect the Earth---use to.ppt

Unit 7,Protect the Earth,Story time,Read and answer Why the water is useful? How should we save energy? What can trees help us to do? What we use plastic to do?,How to protect the Earth?,We should save water,We should save energy,How to protect the Earth?,We should not cut too many trees,We should not use plastic bags,Grammar time,1. should 的用法 we should/shouldnt do 2. use 的用法 useto,情态动词 should should 在本课中表示 “应该，必须”， 用于表示忠告、建议等。 例如： You should drink some hot tea with honey. 你应该喝些蜂蜜茶。 She is tired. She should go to bed early. 她累了，她应该早点睡觉。,情态动词 should 的用法 与情态动词 can 一样，should 的否定形 式为should + not或shouldnt；在疑问句 中， should 放在主语前，should 没有人 称和数的变化。例如： You should drink water. You should not = (shouldnt) drink water. Should you drink water? Yes, you should./No, you shouldnt.,use.to.,Fun time,Fun time,总结,1. 情态动词 should 的用法 与情态动词 can 一样，should 的否定形 式为should + not或shouldnt；在疑问句 中， should 放在主语前，should 没有人 称和数的变化。 2. useto表示用做,Bye bye!,