英语九年级上册Grammar集体备课课件ppt
展开Using when while
Using befre after
Using since till, until
Using as sn as whenever
Use befre after t intrduce a time clause
E.g. He remained there fr abut a year befre the NBA tk ntice f him.
means ________ than a certain time.
They walked abut 30 miles t the westbefre they saw a village.
Time passed quickly and three mnths wentby befre Tm knew it.
It will be half a year befre yu graduate frm this schl.
要过多久…才… 不久…才…
不知不觉就…..; 还没弄清就……
动作进行到什么程度才……
It will be+时间段+ befre...
It will nt be +时间段+ befre...
E.g. After he graduated, he was frced t play in anther basketball league.
means _______ than a certain time.
Yu shuld turn ff the lights befre yu leave the rm.= Yu shuld turn ff the lights befre leaving the rm.Time passed quickly and three mnths went by befre I knew it. Tm went t schl after he finished his breakfast. = Tm went t schl after finishing his breakfast.The sun came ut after the strm stpped.
befre/after+句子=befre/after + ding sth. the subject f the main sentence and that f the time clause are the same.
Use when while t intrduce a time clause
E.g. When he finally gt the chance, he scred 20 pints in his first game.
means __________ a certain time.
at r during
E.g. While (he was)attending junir high, Spud tried ut fr the schl team.
means ______ a certain time.
The days get lnger when spring cmes .When my sister is sweeping the flr, I was washing the dishes.
While my sister is sweeping the flr, I was washing the dishes..
At a certain time—时间点During a certain time—时间段
During a certain time—时间段
The days get lnger when spring cmes.
When/While my sister is sweeping the flr, I was washing the dishes.
When (she is) in truble, she always asks fr my help.I was abut t leave when the phne rang.While (I am) travelling, I like t buy sme pstcards.While we were discussing the prblem, ur teacher walked int the classrm.
在when和while引导的从句中,当主句和从句主语一致且从句中有be动词时,可省略从句的主语和be动词,构成when/while + ding结构
I g jgging every mrning. Then I have breakfast.________________________________________________________________________________________________
a. I g jgging every mrning befre I have breakfast.
b. After I g jgging every mrning , I have breakfast.
2. I practised playing basketball fr hurs. I felt tired ut. __________________________________________________________________________________________________
After I practised playing basketball fr hurs, I felt tired ut.
3. I met Peter. I was waiting at the bus stp. __________________________________________4. I was watching TV. I received a call frm my uncle. __________________________________________ ___________5. I was ready t g t bed. My father came back frm wrk. ___________________________________________ _______________
I met Peter while (I was) waiting at the bus stp.
While (I was) watching TV, I received a call frm my uncle.
I was ready t g t bed when my father came back frm wrk.
Use since till/until t intrduce a time clause
E.g. Yu 've been happy since I first met yu.
means ________ a certain time.
since + 过去的时间点 /动作
Mr Brwn has been in Beijing since yu left.
I’ve lived here since I was brn.
They have been friends since they were at primary schl.
E.g. Spud reminded in anther basketball league fr abut a year till/until the NBA tk ntice f him.
till/until
Spud remained in anther basketball league fr abut a year till/until the NBA tk ntice f him.D nt wake me up until yu finish yur wrk.
till/until: 直到...为止: 直到...才
1.I have been crazy abut playing basketball ______ I was a little by. 2.The weather has been awful this week. The rain did nt stp ______ yesterday evening, s we culd nt practise basketball fr several days. 3.We played basketball in the playgrund this afternn _______ it was getting is the first time we have played basketball______ last Mnday. We enjyed urselves very much.5.I waited fr 20 minutes at the bus stp________ the bus is Friday evening. I will nt g t bed_______ I finish watching my favurite TV prgramme.
Use as sn as whenever t intrduce a time clause
E.g. It began t rain as sn as I left the huse.
means _______ smething happens, r ___________ after smething has happened.
a shrt time
E.g. I can read bks whenever I want t.
means at____________.
=every time
David will g t play basketball ___________ schl is ver.He watches the NBA __________ there is a game n he talks abut basketball, he gets he learnt that the NBA players wuld cme t China, he tried his best t get a ticket.
Ya Ming was brn in Shanghai in 1980. He gt his first basketball__________ he was nly fur years ld, but he did nt becme serius abut basketball_________ he was 12. Ya jined the Hustn Rckets in 2002 and became the best Chinese player t ever play in the NBA.____________ he went t the USA, he knew little English, but he quickly learnt the language. The best mment in his career was in 2004---he scred 41 pints in a game against the Atlanta Hawks. When Ya Ming was living in the USA, he returned t China __________ he was needed. He tk part in the Olympics in 2004 and in 2008 as ne f the Chinese athletes.__________ he ended his basketball career, Ya Ming has dne mre charity wrk, especially fr pr Chinese teenagers.
Since/After
Using since till, until
Using as sn as whenever
当...时在...期间
Using since till, until
主句:现在完成时since引导的从句:一般过去时
Using as sn as whenever
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