情态动词基本用法专题总结大全讲解与练习

2021-12-16/ 网盛信息网/ 查看: 214/ 评论: 10

摘要情态动词基本用法专题总结大全讲解与练习情态动词用法例句注意事项cancould1表许可(和may可互换)、能力2表怀疑、

情态动词基本用法专题总结大全讲解与练习
情态动词用法例句注意事项
can
could 1表许可(和may可互换)、能力
2表怀疑、猜测、可能性（用于否定和疑问句中）
3 could可表比can更委婉的语气及用于虚拟语气。 1You can/may sit here./He can swim.
2 He can’t be sixty.
3 Could you come again tomorrow?
can和be able to都可表能力，但be able to可表达“某事终于成功”，有更多的时态。
may
might 1表可以（问句中表请求，might更婉转）
2表可能，或许（might语气更加不肯定）

3表祝愿（用于倒装句中）

语法易错题
 英语单词记忆
 英语语法练习题

1 May/Might I use your bike?

2 He may/might be at home.

3 May you succeed!

1回答May…do…?的否定用 mustn’t/can’t

2回答May/Might…
do…?的否定用 can’t/might not

must 1表必须，应该（表主观要求）
2表推测（用于肯定句），译为“准是，一定” 1 You must study hard.
2 She must be tired. 否定式mustn’t表不准，禁止；否定回答用needn’t/don’t/doesn’t have to(不必)
have to 只好，不得不（客观的必须，有时态人称变化） Without help, I had to do it myself. must表主观意识。have to有多种时态。
ought to 应当（表示义务责任，口语中多用should You ought to obey laws. 否定用oughtn’t 疑问句用Ought…to do…?

shall 1用于一三人称的疑问句，表征询意见
2用于二三人称, 表示许诺、命令、警告等 1 Shall we go now?
2 The sign there reads, “No person shall smoke here.”
should 1表建议或劝告，译为“应该”
2本该（含有责备意味） 1 You should learn from each other.
2 You should have given him help.

will
would 1表意志或决心
2疑问句中用于第二人称表请求，would比较委婉 1 He promised he would never smoke again.
2 Will/Would you like some tea? would表示过去的习惯或喜好,不涉及现在; used to表示过去常常做现在已经不再有的习惯.

dare 敢（常用于否定句、疑问句和条件从句中） He dare not/daren’t sleep alone.
Dare you touch it? 过去式dared；可作实义动词
need 需要,必须（常用于否定句和疑问句中） You needn’t do the work now. Need…do…?的肯定回答：Yes,…must. 可作实义动词
used to 过去常常（现在已不再） He used to play football. 否定式usedn’t/usen’t to do/didn’t use to do; 疑问Used…to…do…?Did…use to do…?

填入适当的形容词、副词或用所给词的正确形式填空
1. The number of the trees that the villagers planted last year reached as __________ as 6,000,000.
2. There was so _________ smoke that they couldn’t see across the hallway.
3. My little brother is not old ___________ to go to school.
4. In that case, there is nothing you can do __________ than wait.
5. I must be getting fat－I can ____________ do my trousers up.
6. They are __________ little insects that we can not easily see them with our eyes.
7. There was __________ little food left then that we had to turn to the local people for help.
8. Mary kept weighing herself to see how much ___________ she was getting.
9. I haven’t seen the movie and my brother hasn’t _____________.
10. He is always telling lies, so I will ________ believe him.

答案： 1. many 2. much 3. enough 4. other 5. hardly 6. such 7. so 8. heavier
9. either 10. never