英语条件句.ppt
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条件句零条件句第一条件句第二条件句第三条件句零条件句ZeroConditionall意义:
用于阐述事实。
结构:
If+subject+simplepresent,subject+simplepresent.Subject+simplepresentif+subject+simplepresent.例句:
IfIseeaspider,Igetpanicky.IfeelclaustrophobicandimmediatelywanttogetoutofifIenteranenclosedspace.第一条件句FirstConditionall意义:
表达一个动作后的结果结构:
If+subject+simplepresent,subject+will+verb.Subject+will+verb+if+subject+simple+present.例句:
Ifwemovetheofficetothe15thfloor,Illresign.IllprobablyhaveanotherpanicattackifIseeaspider.第二条件句SecondConditionall意义:
用于表达一个假设情况后的结果。
结构:
If+subject+simplepast,subject+would+verb.Subject+would+verb+if+subject+simplepast.例句:
IfIdidntsufferfromafearofflying,Iwouldtravelmore.IwouldconsultadoctorifIhadaphobia.第三条件句ThirdConditionall意义:
是用来表达如果(If)当时那样发生,另外一方面(当时)会如何(通常是指过去的事情,带有一切已经太迟而不能够补救的意思)。
结构:
If+subject+pastperfect,subject+wouldhave+pastperfect.例句:
Shewasill.Shedidntgotowork.改成第三条件句:
Ifshehadntbeenill,shewouldhavegonetowork.