1、八下语法复习 unit 5-unit 6 1.以when和while引导的时间状语从句 1)1)延续性动词和非延续性动词 延续性动词指动作可以延续一段时间,而不 是瞬间结束。如:work、study、drink、eat等。非延续性动词指动作极为短暂，瞬间结束。如:start、begin、hit、jump、knock等。Unit 5 2)在本单元中，出现了以when和while引导的时间 状语从句。when表示“当的时候”。从句中 既可用延续性动词，又可用非延续性动词，这些 动词既可以表示动作，又可表示状态。从句中动 作既可和主句的动作同时发生，又可在主句的动 作之前或之后发生。如：Mary w
2、as having dinner when I saw her.The boy was still sleeping when his mother got home yesterday morning.3)while表示“在的时候”、“在期间”。它强调主句的动作与从句的动作同时发生或主句的 动作发生在从句的动作过程中。While从句中必须 是表示动作或状态的延续性动词。如：The weather was fine while we were in Beijing.She called while I was out.如果主句的动作在从句的动作过程中发生，从句常 用进行时。如:此处缺少例子 1
3、._ Jennifer was reading a magazine,her sister was listening to the pop music.A.While B.When C.What time 2.I was trying to draw a cat on the board _ the teacher came in.A.while B.when C.what time 3.My best friend visited my house while I _ dinner in the kitchen.A.cooked B.cooking C.was cooking A B C
4、Exercises 4.When _ the car _?In 1885.A.did;invent B.was;invented C.does;invent D.is;invented 5.Our teacher wants us to be _ when we talk with the foreigners.A.comfortable B.unusual C.grateful D.confident B D 6.Dick gave me a note while I _ in the library.I guess he made it to say“sorry”to you.A.am r
5、eading B.was reading C.reads D.will read B 2.过去进行时 1.概念:表示过去某一时刻或某段时间内正进行 的动作。2.构成:was/were+动词现在分词 3.用法:a:表示某一时刻正进行的行为，与特定的过去 时间状语连用，常见的时间有:at 8 last night,at this time,at that time,at that moment 等 What were you doing at 10 yesterday morning?I was writing a letter to my father at that moment.b:表示过去
6、某段时间内正进行的动作。e.g.We were building a house last winter.They were waiting for you yesterday.否定句和疑问句：e.g.We were not sleeping at home.Was he feeling well?3.现在分词的构成 1)一般动词在词尾加-ing，如gogoing 2)以不发音字母e结尾的动词,先去掉e,再加-ing come coming make making write writing 3)以重读闭音节结尾的动词，如果末尾以一个辅 字母结尾，应先双写这个字母，再加ing，x和w结尾 的除
7、外。get getting swim swimming show showing 4)以字母y结尾的单词，直接加ing。如：carrying playing studying 5)以字母ie结尾的动词，变ie为y，再加ing。die dying lie lying 6)以元音字母加e结尾，或以e结尾，且e发音的 动词，直接加-ing。see seeing be being 4.使用进行时态的注意事项 see,hear,love,like,know,remember,understand,have5.过去进行时和一般过去时的区别 1)过去进行时表示过去正在进行的动作，而一般 过去时则表示一个完整
8、的动作。如：They were writing letters to their friends last night.昨晚他们在写信给他们的朋友。(没有说明信是否写完)They wrote letters to their friends last night.他们昨晚写了信给他们的朋友。(表达了他们已写好的意思，整个写的过程已完成)2)当动作延续较长时间时或表示厌烦、赞美等 感情色彩时,常用过去进行时表示。如：He was thinking more of others than of himself.他考虑别人的比考虑自己的多。(表示说话者赞扬的口气)The boy was always
9、 making trouble then.那时，他总是惹麻烦。(表示说话者厌烦的口气)过去进行时 含义:表示过去某个时刻 正在进行的动作。结构：was/were+doing 例句：I was having an English class at this time yesterday.现在进行时 含义含义:表示现在正在进行 的动作。结构结构：is/am/are+doing 例句例句：I am having an English class.Exercises 一、单项选择。一、单项选择。1.Sorry,I didnt see you,because I _ a picture.A.draw B
10、.drew C.was drawing D.have drawn 2.Amon _ his ship in a big storm when a giant fish came out of the sea.A.will sail B.is sailing C.was sailing D.has sailed 3.Students in Grade Nine _ a maths exam at this time yesterday.A.take B.are taking C.were taking D.have take C C C 4._ did the rainstorm come?Wh
11、ile we _ a physics lesson yesterday.A.When;have had B.While;are having C.When;were having D.While;have 5.Tony called me _ I was doing my homework.A.if B.because C.while D.until 6.They _ on the sofa when the telephone _.A.sit;rang B.were sitting;rang C.sat;was ringing C C B 7.Oh!Whats wrong with your
12、 finger?I hurt it while I _ a model plane.A.made B.was making C.am making D.make 8.Didnt you hear Dad call you?No,I didnt.I _ with Jack on the phone.A.am talking B.would talk C.have talked D.was talking 9.Tom said he _ basketball with his classmates from 4:00 to 6:00 yesterday afternoon.A.is played
13、B.was playing C.plays D.had played B B D as soon as的用法 as soon as 意为“一就”，引导时间状语从句。若主句是一般将来时，从句用一般现在时表示将来。As soon as he arrives,we will start to work.I will do my homework as soon as I finish the meal.We chose the house for our home as soon as we saw it.As soon as I went in,Jason greeted me warmly.Un
14、it 6 unless的用法 unless 意为“除非；如果不”，引导条件状语从句，如果主句为一般将来时、祈使句或主句含有情态动词，条件状语从句中的谓语常用一般现在时表将来。Unless it rains tomorrow,we will go camping.Dont watch TV unless you finish your homework.You should stick to taking exercise unless you do not care about your health.so.that.的用法 so that 意为“如此以至于”，引导结果状语从句，其中 so 是
15、副词，修饰形容词或副词，其构成为“so+形容词/副词+that 从句”。He worked so hard that he passed the exam.He was so worried that he didnt sleep well last night.such that也可引导结果状语从句，但 such 为限定词，修饰名词，其结构为“such(+a/an)+形容词+名词+that 从句”。This is such an important problem that we should take it seriously.so that 结构有时可与 too to(太而不能），not
16、 enough to do（做某事不够）结构互换。The man is so weak that he cant swim across the river.=The man is too weak to swim across the river.=The man is not strong enough to swim across the river.【拓展延伸】【特别提醒】当形容词为 many/much/few/little（少）时，要用 so，不用 such，即“so+many/much/few/little+名词+that 从句”。There are so many apples
17、that I cant eat them all.Exercises 一、单项选择。一、单项选择。1.In summer,food will go bad quickly _ we put it into a fridge.A.if B.unless C.as soon as D.when 2.Nancy _ us a report as soon as she _ tomorrow.How great!I will be there.A.gives;is arriving B.gives;will arrive C.will give;arrives D.gives;arrives B C
18、3.The Great Wall is _ famous that it has attracted many tourists all over the world.A.so B.very C.such D.quite 4.They spoke in _ a low voice _ I could hardly hear them.A.such;that B.so;that C.neither;nor D.both;and 5.Catherine got married _ a policeman twenty years ago.A.with B.for C.to D.at A A C 6
19、.They couldnt stop _ after they heard the funny story.A.laugh B.laughing C.to laugh D.laughed 7.Jim _ the exam unless he _ hard.A.wont pass;works B.doesnt pass;works C.wont pass;will work D.doesnt pass;will work 8.There is no reason to keep your phone at hand during a meal _ you have some important things.A.until B.if C.when D.unless B A D
