内容正文:
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