必修三Unit4Astronomy：thescienceofthestars

1、1harmful adj.有害的，其反义词为有害的，其反义词为harmless(3)There is no harm in doing sth./It does no harm to do sth.做某事是个好主意做某事是个好主意(或没有坏处或没有坏处) The medicine is to children but does no adults.这种药对儿童有害，却对成年人没有什么害处。这种药对儿童有害，却对成年人没有什么害处。As far as Im concerned, making an apology to him first.就我个人而言，先向他道歉没有什么坏处。就我个人而言，先向

2、他道歉没有什么坏处。harmfulharm tothere is no harm in2exist vi.存在；生存存在；生存(1)exist in 存在于存在于之中之中 exist on 靠靠为生为生 There exists/existed . 某地有某地有；存在；存在(2)existence n. 存在；生存存在；生存 come into existence 产生；成立；开始存在产生；成立；开始存在They are paid hardly enough to exist on.他们收入微薄，几乎无法维持生活。他们收入微薄，几乎无法维持生活。As is known to us, China

3、 as an independent country in 1949.came into existence3puzzle vt.使迷惑；使为难；使窘困；感到迷惑使迷惑；使为难；使窘困；感到迷惑n.(游戏的游戏的)猜谜；难题；谜猜谜；难题；谜(1)puzzle over/about sth. 苦苦思索；仔细琢磨苦苦思索；仔细琢磨 puzzle sth.out 琢磨出琢磨出的答案的答案 a puzzle to sb. 某人不懂某人不懂(2)puzzled adj. 迷惑不解的迷惑不解的(常用来修饰人常用来修饰人) puzzling adj. 令人迷惑不解的令人迷惑不解的(常用来修饰事物常用来修饰

4、事物)Her look on her face suggested she didnt understand what I said.她脸上迷惑的表情表明她不明白我说的话。她脸上迷惑的表情表明她不明白我说的话。puzzled4pull n&vt.拉拉(力力)；拖；牵引力；拖；牵引力pull away(汽车等汽车等)开走开走pull down 拆毁；摧毁拆毁；摧毁pull in (车辆车辆)进站停靠；靠边停靠进站停靠；靠边停靠pull out 驶出；退出驶出；退出pull through 康复；痊愈康复；痊愈We waved as the train .火车驶出车站时我们挥手告别。火车驶出车站时

5、我们挥手告别。The police car signalled to us to .警车发出信号，要我们驶向路边停靠。警车发出信号，要我们驶向路边停靠。pulled out of the stationpull in形形象象记记忆忆1in time及时；终于；总有一天及时；终于；总有一天(1)in no time 立刻；马上立刻；马上 at no time 绝不绝不 at a time 每次；一次每次；一次 at one time 曾经；一度曾经；一度 at the same time 同时同时 from time to time 有时；偶尔有时；偶尔(2)take ones time 别着急

6、；慢慢来别着急；慢慢来 kill time 消磨时间消磨时间Youll because you are always working hard.succeed in time_ , half the land on the earths surface was covered by forest. will smoking be permitted here.At no timeAt one time2in ones turn轮到某人；接着轮到某人；接着in turn 依次；轮流；反之；反过来依次；轮流；反之；反过来by turns 轮流；交替地轮流；交替地take turns to do s

7、th. 轮流做某事轮流做某事It is ones turn to do sth. 轮到某人做某事轮到某人做某事3cheer up(使使)高兴；高兴；(使使)振奋；感到高兴；感到振奋振奋；感到高兴；感到振奋(1)cheer sb. on(比赛中比赛中) 以喝彩声鼓励；为某人加油以喝彩声鼓励；为某人加油 cheer the victory 为胜利而欢呼为胜利而欢呼(2)cheerful adj. 快乐的；高兴的快乐的；高兴的(3)Cheers! (用于祝酒用于祝酒)干杯！干杯！.重点短语必背重点短语必背1 及时；终于及时；终于2 下蛋下蛋3 产生；分娩产生；分娩4 轮到某人；接着轮到某人；接着5

8、阻止；制止阻止；制止in timelay eggsgive birth toin ones turnprevent .from6 感到高兴；感到振奋感到高兴；感到振奋7 既然既然8 突发；爆发突发；爆发9 密切注视；当心；提防密切注视；当心；提防10 挡住挡住(光线光线)cheer upnow thatbreak outwatch outblock out6But when I tried to step forward, I found I was carried twice_as_far_as on the earth and fell over.而当我试着向前迈步时，我发觉我被送出很远，步子的而当我试着向前迈步时，我发觉我被送出很远，步子的跨度竟是在地球上的两倍，因而我摔倒了。跨度竟是在地球上的两倍，因而我摔倒了。twice as far as .是一种倍数的表示方法，意为是一种倍数的表示方法，意为“是是的两倍远的两倍远”。as far as .“远到远到”。Our city has experienced twice as much rain this year as it did last year.我们城市今年的雨水是去年的两倍。我们城市今年的雨水是去年的两倍。Our new school is this one.我们的新学校是这个