1. On what are based our planned activities?
2.How do meteorologists know the weather forecast?
3. How did people predict weather in the old days?
4. What was developed to help people prepare themselves for weather events?
5. Describe some techniques do predict weather.
1.Being guest is good,but being at home is better
2.If I work hard,I will pass the exams
3.I’m going to play football
21. b
22. b
23. b
24. b
25. c (?)
1) have walked;
2) have been walking;
3) have been eating;
4) has slept;
5) have worked;
6) have been working, has said;
7) Have you heard;
8) have you picked, have been picking;
9) Have you seen, have been looking
36.5
1.
- They look at their hands
- We look at our hands
- You look at your hands
2.
- I am angry with my son
- He is angry with his son
- They are angry with their son
- We are angry with our son
3.
- We sit at our table.
- She sits at her table
- You sit at your table
- They sit at their table
4.
- You often help your mother
- I often help my mother
- She often helps her mother
- They often help their mother