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1、初中英语知识点1一般现在时的用法1）经常性或习惯性的动作，常与表示频腮度的时间状语连用。时间状语:every., sometimes, at., on SundayI leave home for school at 7 every morning.2）客观真理，客观存在，科学事实。The earth moves around the sun.Shanghai lies in the east of China.3）表示格言或警句中。Pride goes before a fall.骄者必败。注意:此用法如果出现在宾语从句中,即使主句是过去时,从句谓语也要用一般现在时。例:Co山mbus pr
2、oved that the earth is round.4）现在时刻的状态、能力、性格、个性。I don t want so much.Ann Wang writes good English but does not speak well.比拟:Now I put the sugar in the cup.I am doing my homework now.第一句用一般现在时用于操作演示或指导说明的示范性动作 表示言行的瞬间动作。再如:Now watch me, I switch on the current and stand back.第二句中的now是进行时的标志，表示正在进行的动
3、作的客观 状况，所以后句用一般现在时。2. 一般过去时的用法3.1）在确定的过去时间里所发生的动作或存在的状态。时间状语有:yesterday, last week, an hour ago, the other day, in 1982 等。Where did you go just now?2）表示在过去一段时间内，经常性或习惯性的动作。When I was a child, I often played football in the street.Whenever the Browns went during their visit, they were given a warm we
4、lcome.3）句型:It is time for sb. to do sth ”到时间了”该了”It is time sb. did sth. ”时间已迟了”早该.了”It is time for you to go to bed.你该睡觉了。It is time you went to bed.你早该睡觉了。would （had） rather sb. did sth.表示宁愿某人做某事F d rather you came tomorrow.4） wish, wonder, think, hope等用过去时，作试探性的询问、请求、建议等。I thought you might have
5、some.我以为你想要一些。比拟：般过去时表示的动作或状态都已成为过去,现已不复存在。Christine was an invalid all her life.（含义:她已不在人间。）Christine has been an invalid all her life.（含义:她现在还活着）Mrs. Darby lived in Kentucky for seven years.（含义:达比太太已不再住在肯塔基州。）Mrs. Darby has lived in Kentucky for seven years.（含义:现在还住在肯塔基州，有可能指刚离去）注意：用过去时表示现在，表示委婉语气
6、。1）动词 want, hope, wonder, think, intend 等。Did you want anything else?I wondered if you could help me.2）情态动词 could, would.Could you lend me your bike?3. used to / be used toused to + do:”过去常常”表示过去习惯性的动作或状态,但如今已不存在。Mother used not to be so forgetful.Scarf used to take a walk.（过去常常散步）be used to + doing
7、:对已感到习惯，或”习惯于”，to是介词，后需加名词或动名词。He is used to a vegetarian diet.Scarf is used to taking a walk.（现在习惯于散步）典型例题Your phone number again? I _ quite catch it. It s 69568442.A. didn t B. couldnz t C. don t D. can t答案A.本句虽没有明确的时间状语，但从语意上看出，在听的时候没有听懂这个动作发生在过去，因此 应用过去时。4. 一般将来时1） shall用于第一人称，常被will所代替。Will在陈述句
8、中用于各人称，在争求意见时常用于第二人称。Which paragraph shall I read first.Will you be at home at seven this evening?2）be going to +不定式，表示将来。a. 主语的意图，即将做某事。What are you going to do tomorrow?b. 计划，安排要发生的事。The play is going to be produced next montho有迹象要发生的事Look at the dark clouds, there is going to be a storm.3）be +不定式
9、表将来，按计划或正式安排将发生的事。We are to discuss the report next Saturday.4）be about to +不定式,意为马上做某事。He is about to leave for Beijing.注意:be about to不能与tomorrow, next week等表示明确将来时的时间状语连用。5. be going to / will用于条件句时，be going to表将来will表意愿If you are going to make a journey, you d better get ready for it a s soon as
10、possible.Now if you will take off your clothes, we will fit the new clothes on you in front of the mirror.6. be to 和 be going tobe to表示客观安排或受人指示而做某事。be going to表示主观的打算或计划。I am to play football tomorrow afternoon.（客观安排）F m going to play football tomorrow afternoon.（主观安排）7. 一般现在时表将来1）以下动词:come, go, ar
11、rive, leave, start, begin, return的一般现在时表将来。这主要用来表示在时间上 已确定或安排好的事情。The train leaves at six tomorrow morning.When does the bus star? It stars in ten minutes.2）倒装句，表示动作正在进行,如：Here comes the bus. = The bus is coming.There goes the bell. = The bell is ringing.3）在时间或条件句中。When Bill comes （不是 will come）z as
12、k him to wait for me.r II write to you as soon as I arrive there.4) 在动词 hope, take care that, make sure that 等后。I hope they have a nice time next week.Make sure that the windows are closed before you leave the room.8. 用于现在完成时的句型It is the first / second time. that.结构中的从句局部,用现在完成时。It is the first time
13、 that I have visited the city.It was the third time that the boy had been late.1) This is the. that.结构，that从句要用现在完成时.This is the best film that I ve (ever) seen.这是我看过的最好的电影。This is the first time (that) I ve heard him sing.这是我第一次听他唱歌。典型例题-Do you know our town at all?No, this is the first time I here
14、.A. was B. have been C. came D. am coming答案B. This is the first time后面所加从句应为现在完成时，应选Bo(1) -Have youbeen to our town before?No, itz s the first time I here.A. even, come B. even, have come C. ever, come D. ever, have come答案D. ever意为曾经或无论何时，反意词为never z此两词常用于完成时。This is the largest fish I have ever see
15、n. It is / was the first time +that-clause 的句型中,从句要用完成时。注意:非延续性动词的否认形式可以与表示延续时间的状语连用。即动作不发生的状态是可以持续的。(错)1 have received his letter for a month.(又寸)1 haven* t received his letter for almost a month.9. 比拟 since 和 forSince用来说明动作起始时间，for用来说明动作延续时间长度。I have lived here for more than twenty years.I have lived here since I was born.My aunt has worked in a clinic since 1949.Some new oilfields have been opened up since 1976.I have known Xiao Li since she was a little girl.My brother has been in the Youth League for two years.I have not heard from
