即使的用法英语

if的意思和用法：conj.如果，倘若; 即使; 〈口〉是否; 假设;n.条件，设想;1. (表示条件)如果 ,主句用将来时，if从句用现在时表示将来He will come if you invite him.如果你请他,他会来的。

2. (表示虚拟)假如,要是1)时态：可以表示过去，现在和将来的情况。它的基本特点是时态退后。a. 同现在事实相反的假设。句型 ： 条件从句主句一般过去时should( would) +动词原形If they were here, they would help you.b. 表示于过去事实相反的假设。句型： 条件从句主句过去完成时should(would) have+ 过去分词The rice would not have been burnt if you had been more careful.If she had worked harder, she would have succeeded.If my lawyer had been here last Saturday, he would have prevented me from going.If he had come yesterday, I should / would have told him about it.含义：He did not come yesterday, so I did not tell him about it.If he had not been ill and missed many classes, he would have made greater progress.含义： He was ill and missed many lessons, so he did not make greater progress.c. 表示对将来的假想句型： 条件从句主句一般过去时should+ 动词原形were+ 不定式would + 动词原形should+ 动词原形If you succeeded, everything would be all right.If you were to succeed, everything would be all right.If you should succeed, everything would be all right.3. 是否 = whether 连接宾语从句I wonder if she is ill.不知她是否病了。连接词 conj.1.(表示条件)如果He will come if you invite him.如果你请他,他会来的。2.(表示虚拟)假如,要是If I were you, I would never do that.如果我是你,我决不做那件事。3.(表示让步)即使We'll go even if it rains.即使下雨我们也要去。