专题05 Unit 2 Topic 1（知识点讲练，仁爱通用）-2019-2020学年仁爱英语九年级上册知识点完美同步讲练测大礼包

Unit 2 Saving the Earth Topic 1 Pollution has caused too many problems. · 词形转换 pollute → （名词） hear → （名词） village → （名词） recent → （副词） produce → （名词） chemical → （名词,化学） breath → （动词） noise → （形容词） harm → （形容词） comfortable → （反义词） pleasant → （反义词） environment → （形容词） bear → （过去式） pain → （形容词） → （过去分词） · 语法 ——现在完成时(IV) He had an accident yesterday. We have already sent him to the hospital. · 实战演练 I. 用所给词的适当形式填空。 1. I (teach) here for ten years. 2. I (teach ) here ten years ago. 3. He ( leave) home already. 4. He (leave) home yesterday. 5. I can’t find my bag. Who (take) it away? 6. Who ( take) away my bag just now? 7. I already (see) the film