高中英語-高中條件狀語從句講解(共17張-)課件

1、條件狀語從句12022/10/2條件狀語從句12022/9/2801目錄CONTENT條件狀語從句引導(dǎo)詞條件狀語從句用法總結(jié)歸納020403條件狀語從句省略01目錄CONTENT條件狀語從句引導(dǎo)詞條件狀語從句用法總結(jié)第一部分條件狀語從句的引導(dǎo)詞第一部分條件狀語從句的引導(dǎo)詞什么是條件狀語從句？條件狀語從句就是在復(fù)合句中表示主句動作發(fā)生條件的狀語從句。概念什么是條件狀語從句？條件狀語從句就是在復(fù)合句中表示主句動作發(fā)引導(dǎo)詞0102常用引導(dǎo)詞if（假設(shè)，如果）unless（=if.not 除非）特殊引導(dǎo)詞as/so long as（只要）only if（只有）providing/provided th

2、at （如果） suppose/supposing that（假設(shè)）in case（以防，假使）on condition that（條件是）引導(dǎo)詞0102常用引導(dǎo)詞if（假設(shè)，如果）特殊引導(dǎo)詞as/s第二部分條件狀語從句的用法第二部分條件狀語從句的用法用法01時態(tài)：主將（主祈， 主情， 主將）從現(xiàn) 主句用現(xiàn)在時：表示此事任何時候都是可能的,尤其是現(xiàn)在。 If shes travelling abroad on business, she always phones me every evening. 主句用將來時：表示此事將來的可能性。 If the museum charges for en

3、try, a lot of people wont be able to visit it.02注意：如果引導(dǎo)的條件可以實(shí)現(xiàn)，則“主將從現(xiàn)”； 如果引導(dǎo)的條件和事實(shí)相反，則用虛擬語氣。用法01時態(tài)：主將（主祈， 主情， 主將）從現(xiàn)02常用引導(dǎo)詞如果“祈使句 + and (or)+ 陳述句” 在意思上相當(dāng)于一個帶有條件狀語從句的復(fù)合句。ifwithout與條件句的轉(zhuǎn)化 will用在if條件狀語從句中，不表將來，表意愿=be willing toif only：如果.就好了 常用虛擬語氣only if：只有 用陳述語氣Study hard，and you will pass the exam.=I

4、f you study hard, you will pass the exam.If you will be quiet，Ill tell you what happened.Man cant live without water.=Man cant live if there is no water.If only I could speak French.Only if the alarm clock rings，do I wake up. only放在句首，主句要用部分倒裝。常用引導(dǎo)詞如果“祈使句 + and (or)+ 陳述句” 在概念unless除非=if.notMost bird

5、s find it safe to sleep in the trees，but _ they have eggs or young chicks，they dont use a nest.A. why B. howC. unless D. whereYou must keep on working in the evening，_ you are sure you can finish the task in time.A. as B. ifC. when D. unlessWe wont keep winning games _ we keep playing well.A. becaus

6、e B. unlessC. when D. while常用引導(dǎo)詞概念unlessMost birds find it saas long as=so long as 只要You will make it as long as you put your heart into it. 只要你用心投入，你就會成功。on condition that 條件是I will lend you the book on condition that you return it before Saturday.只要你周六前能還，我可以把書借給你。in case 以防，假使You can borrow my ca

7、r in case you promise not to drive too fast. 假如你答應(yīng)不開得太快，我就可以把車借給你。 providing/provided that 如果 Hes welcome to come along，provided that he behaves himself.只要他規(guī)矩點(diǎn)，他一起去是受歡迎的。01020304特殊引導(dǎo)詞suppose/supposing that 假設(shè)I would love to come and see you on Saturday，supposing I dont have to work that day.如果周六我不必工

8、作的話，我會來看你。05as long as=so long as 只要on con小試牛刀1.China is sure to further reduce the poor rural population by over 10 millionwe Chinese work hard together.A.if onlyB.even ifC.as long asD.for fear that2. you try to do something beyond what you have already mastered, you will never grow. A.Once B.If C.

9、BecauseD.Unless3. you can sleep well, you will lose the ability to focus, plan and stay motivated after one or two nights.A.OnceB.UnlessC.IfD.When 4. It is so cold that you cant go outsidefully covered in thick clothes.A.ifB.unlessC.onceD.when 小試牛刀1.China is sure to further小試牛刀5. This medicine is qu

10、ite beneficial to your recovery after the operation,you take it as told.A.unlessB.providingC.consideringD.since 6. you recognize an idiom when it is being used, it is easy to misunderstand what you read or hear.A.AlthoughB.BecauseC.UnlessD.While 7. Do you know anything about the intellectual property law?Well, you produce pirated goods, you are against it.A.when;soB.unless;orC.if;thenD.although;yet小試牛刀5. This medicine is quite 第三部分條件狀語從句省略第三部分條件狀語從句省略A從句謂語動詞中含有be條件B從句的主語和主句主語一致，或從句主語為it省略If (it is) possible，he will help you out of the dif