1、Unit 3 SafetyLesson 13: Be Careful, Danny!I. Learning aims:Master the new words: careful, safety, hang, ceiling, serious, ambulance, necessary II. Learning important and difficult points: 1) I think Im tall enough.2) I tried to catch you, but you landed on top of me.3) I dont think my arm is broken.
2、4) Tell her we are taking Brian to the hospital.Language Points:1. careful【用法】作形容词，意为“小心的、仔细的”，在句中作定语或表语。它的副词形式是carefully。【举例】Li Hong is a careful girl. She does everything carefully. 李红是个认真的女孩。她做任何事情都很认真。Please be careful when you cross the street. 当您横过街道时要当心。2. I tried to catch you, but you landed
3、 on top of me. 我尽力要抓住你，但你落在了我头上。【用法】句式try to do something 意为“尽力做某事”；类似句式try doing something 则表示“尝试做某事”。【举例】Ill try to do everything well. 我将尽力做好每件事情。Li Ming is trying to skate on the real ice. 李明正在尝试着在真正的冰上滑冰呢。3. I dont think my arm is broken. 我认为我的胳膊没有折。【用法】在动词think, believe, expect, guess等后面的宾语从句中的谓语动词如果是否定形式，这一否定形式往往转移到主句中，也就是主句成了否定形式，而从句成了肯定形式，但实际上还是否定的从句。【举例】We dont believe they can keep up with us. 我相信他们是不会赶上我们的。
