人教版高二英语必修三unit5UsinglanguagepointsPPT课件

1、1unit 5canada - “ the true north”2learning aims1.to analyse some difficult sentences.2.to master some sentence structures.3.to put them into pracrice. 3they were not leaving for montreal until later, so they went on a tour of the city. 她们要晚些时候才动身去蒙特利尔她们要晚些时候才动身去蒙特利尔,因此就在多伦多市内游览了一番。因此就在多伦多市内游览了一番。lan

2、guage points 4n leave for sp. 动身去动身去n leave for 离开某地去某地离开某地去某地n leave sth. aside 把把搁置一边搁置一边n ask for leave 请假请假next friday , he is leaving for london.why are you leaving shanghai for beijing?i had to ask for leave that day because my mother was ill.why not leave the difficult problem aside and solve

3、 the easy one first.51) they were not leaving for.属于过去进行时表示将来属于过去进行时表示将来的动作。的动作。 表示表示位置转移的瞬间动词位置转移的瞬间动词。如。如: come, go, arrive, leave, start, return, stay, meet, get等可用等可用进行时进行时表示表示将来的动作将来的动作;用现在进行时表示一般将来时用现在进行时表示一般将来时;用过去用过去进行时表示过去将来时。进行时表示过去将来时。 the train is arriving soon.火车就要进站了。火车就要进站了。 2) until/

4、till 直到直到为止为止 until常与否定句连用常与否定句连用, notuntil 直到直到才才 he didnt finish the work until yesterday.6 肯定形式表示的意思是肯定形式表示的意思是“做某事直至某时做某事直至某时”, 动动词必须是延续性的。词必须是延续性的。 否定形式表达的意思是否定形式表达的意思是“直至某时才做某事直至某时才做某事”。动词为延续性或非延续性都可以。动词为延续性或非延续性都可以。肯定句：肯定句：i slept until midnight. 我一直睡到半夜时醒了。wait till i call you. 等着我叫你。7否定句：否定

5、句：she didnt arrive until 6 oclock.她直到她直到6点才到。点才到。dont get off the bus until it has stopped. 公共汽车停稳后再下车。公共汽车停稳后再下车。否定句可用另外两种句式表示。否定句可用另外两种句式表示。 a. not until 在句首在句首, 主句用倒装。主句用倒装。 not until the early years of the 19th century did man know what heat is. 直到直到19 世纪初世纪初, 人类人类才知道热能是什么。才知道热能是什么。8b. 用于强调句用于强调

6、句it is not until that it was not until i told him that he knew about it. 直至我告诉他，他才知道这件事。直至我告诉他，他才知道这件事。it was _ yesterday _ i was wrong. a. until; did i realize b. not until; did i realize c. until; that i realized d. not until; that i realizedd9 2.its too bad you cant go as far as ottawa as far as

7、1) 直到直到远远, 远到远到; 2) (表示程度表示程度, 范围范围)就就; 据据；至于；至于 as/so far as i know 据我所知据我所知 as far as i am concerned 就我而言就我而言 as long/high/wide/deep as 和和一样长一样长, 长达长达 as many/much as 多达多达 so far 到目前为止到目前为止 by far 最最, 得多得多 (用于比较级或最高级前用于比较级或最高级前)10nwhy dont we walk as far as the end of the road?nthis river is as de

8、ep as 50 meters.nthis river is as deep as that one.nour school library has as many as 500,000 books.nas far as i know, he is by far the best player in our class.nwe have known nothing about it so far.11用适当的介词或副词填空。用适当的介词或副词填空。1. have you got any idea when we shall leave _ rome?2. this may occur in a

9、reas of high rainfall or in coastal areas where rivers flow _ the ocean.3. i usually walk along the path in the countryside _ dusk.forintoat / around124. we set sail _ dawn and headed straight for shanghai.5. do you mind if we discuss a little business _ dinner?6. my parents often chat _ me after supper.7. write these words _ small letters, not capital letters.atoverwithin138. will you please go _ with me to do some shopping?9. cant you look _ your examination exercises again?10. we used to walk _ the river when we lived in this village.downtown / alongoveralon