八年级(上)英语期中复习资料(语法篇).docxVIP

英语·八年级（上）期中复习资料——语法篇一、should 和 ought to 的用法(一) Should ought to 都是情态动词。常用来提供或征求意见，或表达说话者认为应该做的事，意思是应该是……。1. “should/ought to + 动词原型”表示应该做某事，或做某事的动机是正确的。如：（1）Tom should go to bed earlier. He goes to bed very late and he’s always tired. Tom应该早点睡。他很晚睡觉，于是总觉得很累。（2）It’s a nice film. You ought to go and see it.这是部不错的电影，你应该去看一看。2.ought to 的否定式是ought not to或缩写为oughtn’t to； should的否定式是should not或缩写为shouldn’t 。如： You shouldn’t tell my mother about this. 你不应该把这件事告诉我妈妈。 He oughtn’t to leave without saying anything. 他不应该一声不吭就离开。（二）区分should/mustYou shouldn’t be cruel to animals.(不具备强制力）You mustn’t park your car here. Drive it away immediately.(具有强制力）（三）Should/ought to 常与think连用1.I think … should/ought to…2.I don’t think …should/ ought to …3.Do you think …should/ought to….?（四）should 和ought to用于疑问句中，常用来询问他人的意见或建议。如：（1）——Ought I to finish my homework now? ——Yes, you ought to.（2）When should I leave home tomorrow?疑问句的形式是：should+主语+动词原形Ought+主语 +to +动词原形练习：A）1. We throw the rubbish into the bin. A. should B. ought to C. may D. would2. Parents raise their children until they are 18.A. should B. ought to C. may D. would3. They discuss it now.A. ought to not B. not ought to C. don’t ought to D. ought not to 4. he his parents about this problem? A. Should, listens B. Ought, listens to C. Should, listen to D. Ought, listen to 5. He here on time. A. should came B. should come C. should comes D. should comingB）He ought to finish this work at the moment. 1. this work at the moment? (改成一般疑问句)2. He this work at the moment.（改成否定句）He should put the books here.3. He the books here.（改成否定句）4. he the books here? (改成一般疑问句)Should we stay here?5. No, . (作否定回答)【练习答案】A) ABDCB B) 1.Ought he to finish 2.ought not to finish 3.should not put 4.Should put 5. we shouldn’t二、Infinitive and Gerunds（一）不定式（Infinitive）1. 什么是动词不定式？主要行为动词后面的动词都采用了“to+动词原形”的结构, 我们把这种结构称为动词不定式（有时可以不带to）。动词不定式没有人称和数的变化, 在句子中不能作谓语。2.不定式的语用功能1) 表示“决