1、Unit 3 The environment and usLesson 21【学习目标】1To learn to describe animals and plants in English.2To revise the words and sentence patterns learned in this unit.【学习重难点】1To learn to describe animals and plants in English.2To revise the words and sentence patterns learned in this unit.【学习过程】一、新知学习1Fill
2、 in the missing letters._ _ _guin _ _ _mal _ _ _daen_ _ _onment _ _sert _ _ _est_ _ve _ _ll pro_ _ _ _re_ _ _ recy_ _ _ destr_ _2Match the opposites.dry dirty bad old high dangerousgood young safe wet clean low3Lets sing the song.Edelweiss二、达标检测1Finish the sentences with the words from the word box in the Exercise 3.For example:Trash in the water can kill fish.2Look at the picture. Write two sentences to tell whether it helps or hurts the environment.
