Unit 6 Birdwatching
   Grammar
1. Understand using to-infinitives for purpose, and remember the verbs in the structure “verbs+objects +to-infinitives”. 了解动词不定式表目标，记住用动词不定式做宾语补足语动词。2.Be able to use to-infinitives for purpose and “verbs+objects+to-infinitives” freely by self-study and group work. 经过自主学习和小组合作能准确自如应用这两个语法项目。3. Enjoy studying and sharing your ideas with others.  乐于分享，享受学习乐趣。
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