throw litter about  乱扔垃圾

keep you active  使你保持精力旺盛

during the day=in the daytime  在白天

get up early/late  早起/迟起

get enough sleep得到足够的睡眠

exercise on an empty stomach= exercise without eating anything   空腹锻炼

need sth   需要某事

need to do sth = need do sth  需要做某事

get into   进入

become sick   生病

fight germs  抗击病菌

keep the air clean and fresh  保持空气清新

eat bad food  吃变质食物

sweep the floors打扫地板

as we know   众所周知

have the right kinds of food

吃正确种类的(健康的)食品

choose the wrong food

选择错误的(不健康的)食品

in different ways  用不同的方法

make us sick  使我们生病

be necessary for sb.to do sth.

对于某人来说做某事是必不可少的

in the kitchen    在厨房

talk with       与……交谈

hurry up       赶紧/快

go ahead=go on    继续

sprea easily      易传播

do exercise   做运动

go to crowded places去拥挤的地方

agree with sb.      同意某人

do one’s best to do sth   尽力做某事

fight SARS     抗击非典

do some cleaning 打扫

all the time=always总是/一直

keep away from animals 远离动物

just a moment  稍后

I’m afraid  恐怕

be afraid of    害怕

be busy doing sth.忙着做某事

examine the patients  检查病人

ring sb up/ phone sb/ call sb

打电话给某人

call back       回电话

get through       打通，通过

leave a message 留口信

give sb the message  给某人带口信

take a message    捎口信

tell sb sth.      告诉某人某事

tell/ask sb.to do sth  叫某人做某事

take an active part in       积极参加

care for patients     照顾病人

take care of…= look after / care for             照顾……

save the patients    挽救病人

It’s one’s duty to do sth.

做某事是某人的职责

What do you think of…你认为…怎么样?

Long time no see   好久不见

teach oneself=learn by oneself  自学

let sb.out    让某人出去

help sb.(to) do sth      帮助做某事

enjoy oneself=have a good time

have fun       过得愉快

tell sb.a story/stories给某人讲故事

say to sb.    对某人说

play sports   做运动

take some Chinese medicine 吃些中药

Review of Units 1---2

break the window   打破窗户(玻璃)

get lost          丢失;迷路

on one’s way (to)  在….的路上

take the wrong bus  搭错车

one of the most popular sports

最受欢迎的运动之一