7.How do you usually go to school?　 By b__ k __. 8.There are a lot of flowers in the g __ d ___. 9.Winter comes after a ___ n. 10. Trees turn gr___n in spring.

6.Don't open the wind ____ . It's cold outside.

5.There are a lot of cars and buses in the str____t.

4.My parents work f____ ve days a week.

3.Put your r____ler and your pen in the pencil-box.

① 根据句意补全单词中所缺字母，使补全后的句子通顺、合理。

l. What colour is Ann's skirt?　 It's r____d.

2.We often play g____mes after school.

4、理解词类转化

　在英语中，不少词可以属于几个词类，如water( 水、浇水；名词和动词)；work(工作；动词和名词)

，fast(快；形容词和副词)，since(自从；介词和连词)等。

30. be good at…

29. enjoy doing

28. ask sb. (not) to do sth.