九年级英语Unit21.usedtodosth.过去常常做某事否定形式:didn’tusetodosth./usednottodosth.如:Heusedtoplayfootballafterschool.放学后他过去常常踢足球。Didheusetoplayfootball?Yes,Idid.No,Ididn’t.Hedidn’tusetosmoke.他过去不吸烟。2.反意疑问句①肯定陈述句+否定提问如:Lilyisastudent,isn’tshe?LilywillgotoChina,won’tshe?②否定陈述句+肯定提问如:Shedoesn’tcomefromChina,doesshe?Youhaven’tfinishedhomework,haveyou?③提问部分用代词而不用名词Lilyisastudent,isn’tshe?④陈述句中含有否定意义的词,如:little,few,never,nothing,hardly等。其反意疑问句用肯定式。如:HeknowslittleEnglish,doeshe?他一点也不懂英语,不是吗?Theyhardlyunderstoodit,didthey?他们几乎不明白,不是吗?3.playthepiano弹钢琴4.①beinterestedinsth.对…感兴趣②beinterestedindoingsth.对做…感兴趣如:Heisinterestedinmath,butheisn’tinterestedinspeakingEnglish.他对数学感兴趣,但是他对说英语不感兴趣。5.interestedadj.感兴趣的,指人对某事物感兴趣,往往主语是人interestingadj.有趣的,指某事物/某人具有趣味,主语往往是物6.still仍然,还用在be动词的后面如:I’mstillastudent.用在行为动词的前面如:Istilllovehim.7.thedark天黑,晚上,黑暗8.害怕…beterrifiedofsth.如:Iamterrifiedofthedog.beterrifiedofdoingsth.如:Iamterrifiedofspeaking.9.on副词,表示(电灯、电视、机械等)在运转中/打开,其反义词off.withthelighton灯开着10.walktosomewhere步行到某处walktoschool步行到学校11.spend动词,表示“花费金钱、时间”①spend…onsth.在某事上花费(金钱、时间)②spend…doingsth.花费(金钱、时间)去做某事如:Hespendstoomuchtimeonclothes.他花费太多的时间在衣着Hespend3monthsbuildingthebridge.他花费了三个月去建这座桥。Payfor花费如:Ipay10yuanforthebook.我花了10元买这本书。12.take动词有“花费”的意思常用的结构有:takesb.…todosth.如:Ittakesmeadaytoreadthebook.take…todosth.13.chatwithsb.与某人闲聊如:Iliketochatwithhim.我喜欢和他聊天。14.worryaboutsb./sth.担心某人/某事worry是动词beworriedaboutsb./sth.担心某人/某事worried是形容词如:Don’tworryabouthim.不用担心他。Motherisworriedaboutherson.妈妈担心他的儿子。15.allthetime一直、始终16.takesb.to+地方送/带某人去某个地方如:Apersontookhimtothehospital.一个人把他送到了医院。Luitookmehome.刘把我送回了家。(home的前面不能用to)17.hardlyadv.几乎不、没有hardlyever很少hardly修饰动词时,通常放在助动词、情态动词之后,实义动词之前助动词/情态动词+hardlyhardly+实义动词如:Icanhardlyunderstandthem.我几乎不能够明白他们。Ihardlyhavetimetodoit.我几乎没有时间去做了。18.missv.思念、想念、错过19.inthelastfewyears.在过去的几年内常与完成时连用如:IhavelivedinChinainthelastfewyears.在过去的几年内我在中国住。20.bedifferentfrom与…不同21.howtoswim怎样游泳不定式与疑问词连用:动词不定式可以和what,which,how,where,when等引导的疑问句连用,构成不定工短语。如:Thequestioniswhentostart.问题是什么时候开始。Idon’tknowwheretogo.我不知道去哪。22.makesb./sth.+形容词makeyouhappymakesb./sth.+动词原形makehimlaugh23.moveto+地方搬到某地如:ImovedtoBeijinglastyear.24.itseemsthat+从句看起来好像……如:Itseemsthathehaschangedalot.看起来他好像变了许多。25.helpsb.withsth.帮某人某事helpsb.(to)dosth.帮某人做某事ShehelpedmewithEnglish.她帮助我学英语。Shehelpedme(to)studyEnglish。她帮助我学习英语。26.fifteen-year-old作形容词15岁的fifteen-year-olds作名词指15岁的人fifteenyearsold指年龄15岁如:afifteen-year-oldboy一个15岁的男孩Fifteen-year-oldsliketosing.15岁的人喜欢唱歌。Iamfifteenyearsold.我是15岁。27.支付不起…can’t/couldn’taffordtodosth.can’t/couldn’taffordsth...