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1、九年级英语全一册知识点总结Unit11. 提建议的句子：What/howabout+doingsth.?eg: What/Howaboutgoingshopping?Whydontyou+dosth.? eg:Whydontyougoshopping?Whynot+dosth.?eg:Whynotgoshopping?Lets+dosth.eg:LetsgoshoppingShallwe/I+dosth.?eg: Shallwe/Igoshopping?2. also, either, too用法区别also也、而且（用于肯定句）常在句子的中间; either也（用于否定句）常在句末; too
2、也(用于肯定句)常在句末3. oneof+(the+形容词最高级)+名词复数形式,其中如：Sheisoneofthemostpopularteachers.4. Its+形容词+(forsb.)todosth.(对于某人来说)做某事eg: Itsdifficult(forme)tostudyEnglish.对于我来说学习英语太难了。Unit21. usedtodosth.过去常做某事。否定形式：didntusetodosth./usednottodosth.eg:Heusedtoplayfootballafterschool; Hedidntusetosmoke.他过去不吸烟。2. 反意疑问句
3、肯定陈述句否定提问如：Lilyisastudent,isntshe? 否定陈述句肯定提问eg:ShedoesntcomefromChina,doesshe?Youhaventfinishedhomework,haveyou?陈述句中含有否定意义的词，eg: little,few,never,nothing,hardly, nobody等。其反意疑问句用肯定式。eg: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. spend/ pay/ take表 “花费”的用法区别 s
4、pend动词，表示“花费金钱、时间”spendonsth./spend(in)doingsth.eg:Hespendstoomuchtimeonclothes.他花费太多的时间在衣着eg:Hespend3monthsbuildingthebridge. Payfor花费eg:Ipay10yuanforthebook.我花了10元买这本书。take常用的结构有：ittakessbtodosth. eg: Ittakesmeadaytoreadthebook.4. fifteen-year-old作形容词，“15岁的” eg:afifteen-year-oldboy一个15岁的男孩fifteeny
5、earsold指年龄，“15岁” eg: Iamfifteenyearsold.我15岁Unit31. 被动语态结构：be动词+ v.过去分词(助动词be有人称，数和时态的变化) eg: is opened; was given; were brokenWe are not allowed to come into the classroom(by our teacher).2. enough足够“adj.enough”eg: beautifulenough足够漂亮“enoughn.”(前后都可) eg: enoughfood/ food enough足够食物3. 倒装句:so助动词(be/d
6、o/will/have)/情态动词主语意为“也是一样” eg:Sheisastudent.SoamI.她是一个学生，我也是。Shewenttoschooljustnow.SodidI.她刚才去学校了，我也是Shehasfinishedthework.SohaveI. Shewillgotoschool.Sowillhe. Unit41. few, a few/ little, a little区别2. hundred,thousand,million,billion(十亿)词前面有数词或several一词时不能加s,反之，则要加s并与of连用，表示数量很多如：severalhundred/th
7、ousand/million/billionpeople； hundreds of people3. too+形/副+todosth.太而不能eg:Imtootiredtostand.我太累了而不能站4. asksb.todo让某人做某事tellsb.todo告诉做某事否定：asksb.nottodosth.让不要做某事；tellsb.nottodosth.告诉不要做eg: Teacheraskedmetocleantheclassroom.Teacheraskedmenottocleantheclassroom.Unit51. 现在完成时 结构：肯定句：主语+have/has+v.过去分词+
8、其他否定句：主语+have/has+not+v.过去分词+其他一般疑问句：Have/Has+主语+v.过去分词+其他特殊疑问句：特殊疑问词+一般疑问句（have/has+主语+v.过去分词+其他）意义：表示过去发生或已经完成的某一动作对现在造成的影响或结果；表示过去已经开始，持续到现在的动作或状态eg: I have spent all of my money. (含义是:现在我没有钱花了.) Mary has been ill for three days. (状态持续)I have lived here since 1998. 另：have(has)beento+地点去过某地已经回来（曾经
9、去过）have(has)goneto+地点去了某地没有回来eg: ShehasbeentoShanghai.她去过上海。(已经回来)ShehasgonetoShanghai.她去了上海。(没有回来)2. 情态动词must,may,might,could,may,cant表示推测含义与用法后面都接动词原形. eg: Thedictionarymustbemine.Ithasmynameonit.3. if引导的条件状语从句，主句用一般将来时，从句用一般现在时代替将来时eg:Ifyoudonthurryup,youllbelate.如果你不快点，你将会迟到Unit61. prefer动词“更喜欢,
10、宁愿”prefersth.更喜欢某事IpreferEnglish.我更喜欢英语。preferdoing/todo宁愿做某事eg:Iprefersitting/tosit. prefersthtosth.同相比更喜欢 eg:Ipreferdogstocats.与猫相比我更喜欢狗。preferdoingtodoing宁愿做某事而不愿做某事eg:Ipreferwalkingtositting.我宁愿走路也不愿坐着。Unit71. howfar问路程多远howold问年龄多少岁howlong问时间多久多长howoften问频率多久一次2. bewillingtodo愿意做某事eg:Iamwilling
11、tohelpyou.我愿意帮你。3. cometrue实现如：Mydreamhavecometrue.我的梦实现了。4. hold on to sth继续，坚持，保持某物; quite a few相当多，不少; according to .根据、，按照、; thousands of数以千计的，许许多多的; depend on取决于某事物，视某事物而定.Unit81. notonlybut(also)不但而且用来连接两个并列的成分以notonly,but(also)开头的句子往往引起部分倒装。eg:NotonlydoIfeelgoodbut(also)he feels good.Notonlyc
12、anIdoitbut(also)Icandobest.也是说得要把前面的句子中的助动词或者是情态动词放在主语的前面。 Notonlybut(also)接两主语时，谓语动词随后面的主语人称和数的变化是就近原则如：NotonlyLilybut(also)youlikecat.不仅莉莉而且你也喜欢猫。Notonlyyoubut(also)Lilylikescat.不仅你而且莉莉喜欢猫2. atonce=rightaway立刻马上如：Doitatonce.马上去做。Unit91. notuntil直到才eg:IdidntgotobeduntilIfinishedmywork.我直到完成我的工作才去睡觉
13、。eg:He didnt leave until 6 oclock. 他直到6点才离开。2. 被动语态3. dividesth.into将划分成.通常指将一个整体分成几个部分eg: Letsdivideourselvesinto4groups.让我们把我们自己划成4组。Unit101. 过去完成时(1)构成：助动词had+过去分词否定式：hadnot+过去分词缩写形式：hadnt(2)意义：表示在过去某一时间或动作之前已经发生或完成了的动作，即“过去的过去”。 eg: WhenIgotthere,youhadalreadyeatenyourmeal.当我到达那里时,你已经开始吃了。eg: Bythetimehegothere,thebushadleft.到他到达这里时，汽车已经离开了2.bythetime直到时候, 截至到时候eg:By
