Unit 7 Would you mind turning down the music?

you should try                     （別吃垃圾食品）.
（3）polite 意為“有禮貌的”，其反義詞為impolite, be polite to sb.意為“對某人有禮貌”。
we should be polite to old people.
it’s impolite of you to say so.
10. classmates don’t return my eraser.
句中的return意為“歸還，返回”，相當于get back, give back, come back等。
ex: (1) when did you return to china? (come /get back)
(2) could you please give back my book?
11. if you spend some time in an english-speaking country,…
（1）句中的english-speaking 意為“說英語的”，是由名詞+動名詞構成的。類似的詞還有：tree-planting day（植樹節）。
（2）spend意為“花費（時間，金錢）”等，常用短語有 “spend time/money on sth.”或 “spend time/money(in) doing sth.”
ex: he spend 2 hours doing his homework. (doing可用on替換)
12. would you mind keeping your voice down?
（1）keep…down意為“壓低聲音”，keep作及物動詞，意為“保留，保存，保持”等，后面常跟復合賓語，即keep+賓語+賓補，作賓補的可以是形容詞、現在分詞、副詞或介詞短語。
△ when we do eye exercises, we should keep our eyes closed.
it’s hot in the room. would you mind keeping the windows open.
△ don’t keep kids studying all day.
i’m sorry to keep you waiting too long.
△ nobody can keep him back.
you’d better keep your voice down.
△ please keep yourself from the grass.
i always keep my keys in my bag.
△ he kept smiling when he read the letter.
（2）voice意為“聲音”，指人的聲音（如說話、唱歌、笑時發出的聲音等）。sound指能聽見的任何聲音，也可用作動詞，意為“聽起來”。noise通常指大而令人不愉快的噪音、喧鬧聲等。例如：
△ try not to make any        when you are in the reading room.
there’s too much      in the street. it’s too noisy.
—what about going fishing? —that        great.
can you hear the        of water?
the singer has a beautiful        .
a. sound  b. voice  c. noise  d. sounds
13. at first首先，at last / in the end / finally最后，終于
14. asia-asian, europe-european
france is in        , it’s a        country.
15. talking loudly is not allowed.
此句中的allow意為“允許，承認”，allow sb. to do sth. 意為“允許某人做某事”。
例如：parents should allow their children choose their friends.
smoking is not allowed here.
16. we should take care not to cough or sneeze loudly in public.