对应训练
turn on turn down turn up turn off
5.Please help me the light.It's too dark.
6.It's time for you to the computer and go to bed.
7. Please the radio. My baby is sleeping.
8. Please the radio. The piece of music sounds good.

5.turn on 6.turn off 7.turn down 8.turn up

9.Jimmy always practises (play) the guitar in the morning.

9.playing

10.爱丽丝放学后通常练一个小时钢琴。
（翻译句子）
。

10.Alice usually practises playing the piano for an hour after school.

祈使句
▶含义:祈使句是用来表示请求、命令或建议等的一种句型。其主语一般为第二人称you,但通常省略。祈使句的句末一般用句号,表示较强语气时用感叹号。为了使祈使句显得更委婉、有礼貌,可在开头或结尾加上 please。
▶祈使句的四种类型
①Do型祈使句:实义动词原形+其他.
如:Listen to me,please.请听我说。
②Be型祈使句:Be动词+其他.
如:Be quiet,please.请安静。
③Let型祈使句:Let+sb.+动词原形+其他.
如:Let's play football.让我们踢足球吧。
④No型祈使句:No+动词-ing形式/名词!
(表示禁止)
如:No smoking! 禁止吸烟!
No photos! 禁止拍照!

答案略