英语条件句.ppt

1、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+sim

2、plepresent,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.