三级语法时态语态情态.ppt

语法专项 动词的时态： 一般现在式： n表示经常发生的动作或存在的状态：常和always, usually, often ,sometimes, every day, every week的等时间状语连用。 表示普遍的真理。由于是众所周知的客观事实， 所以一般不用时间状语。 n有些表示心理状态或感情的动词往往用一般现在时。 I don’t think you are right. 考试重点 在时间、条件状语从句中用一般现在时表示将来的动作：常用的连词有as soon as, when, till ,if，unless , the moment等。 1）Once you ___the theory, you will have no further difficulty. A. understand B. will understand C. understood D. have understood A 2）When the mixture ______, it will give off a powerful force. A. will heat B. will be heated C. is heated D. has heated C 一般过去时： 表示过去的动作或状态： 常和过去时间状语连用。just now, last year, when I was 8 years old 等。 Youve already missed too many classes this term .You ____two classes just last week. A. missed B. would miss C. had missed D. have missed A ?used to do sth ：过去常常做… I _____ take a walk in the morning. A used to B am used to C was used to D use to A it is high time (that )…句型中， 谓语动词用过去时 Don’t you think it is time you _____smoking? A. give up B. gave up C. would give up D. should give up B 一般将来时 will (shall)+原形动词： 表示将来的动作或状态。 be going to +动词原形： 表示马上就要发生的事情或打算好要做的事。 be to +动词原形： 表示安排或计划好了的动作。 be about to +动词原形： 表示即将发生的动作。 某些表示开始、终结、往来行动的动词如：go ,come, begin, arrive， leave 等的现在进行时可表示将来。  Is the party almost over? I think so. A lot of people __ to leave. A is beginning B begin C are beginning D have beginning C I won’t be free Friday morning. I ___ a friend off. A am seeing B shall be seen C have seen D shall have seen A 动词进行时的形式： 现在进行时： am/is/doing 过去进行时：was/were/doing  有些瞬间动词或表示状态的动词不能用于进行时态。如appear, believe, declare, hate, have ,hear, know, like, love, need, own, seem, see, sound, taste, want, wish等。 现在进行时 表示此时此刻（说话时）正在进行的动作。 表示现阶段正在进行的动作，　但此刻并不一定在进行。 I am attending a conference in Beijing. 过去进行时： 表示在过去某一段时间正在进行的动作。常需用表示过去的时间状语或通过上下文来判断时间。 He was doing his homework from seven to nine last night. She was listening to English broadcast when I came in. when 和while