作者:城市网 来源:城市网学院 更新日期:2013-9-7
情态动词--have to have to have to加动词原形 表示"不得不"、"必须"的概念。它比must更含有"客观条件使得必须如此做"的意思,并有较多的时态。如: Mr. Johnson has to work very hard to earn a living.约翰逊先生为了谋生不得不拼命干活。 I had to leave the party early last night. I wasn't very well.昨晚我只得早点离开晚会,我不大舒服。 We will have to get up very early tomorrow.我们明天必须起得很早。 I shall have to go to the clinic today for my bad cough.我咳嗽得厉害,今天必须去诊疗所看看。 [注]口语中的I have got to,you have got to等:I have to,you have to. Have I got to?和Do I have to?这两种疑问形式均可用。 [英语语法手册]情态动词--shall shall shall作为情态动词用于第二、三人称 可表示说话人给对方的"命令"、"警告"、"允诺"、"威胁"等概念。如: You shall do it,whether you want to or not. 不管你愿意不愿意,你必须做这项工作。(命令) You shall have the book as soon as I finish it.这本书我一看完就给你。(允诺) You shall pay for it.你一定会受到惩罚的。(威胁) 在疑问句中,情态动词shall用于第一、三人称 表示说话人征求对方的意见或向对方请示。如: What shall I do now? 我现在该做什么? Shall we go for a walk? 我们去散步好吗? Shall he #e tomorrow? 你要他明天来吗?
|