在宁波小升初英语复习的过程中，知识点有很多，包含着语法、时态等等。下面是宁波奥数网小编整理的小升初英语情态动词用法及详细解析，大家可以看下。

　　情态动词只有情态意义，即它所表示的是说话人对动作的观点，如需要、可能、意愿或怀疑等。

　　情态动词的特征：

　　1.在形式上，情态动词没有实义动词的各种变化。

　　2.在意义上，大多数情态动词有多个意义。

　　3.在用法上，情态动词与助动词一样，须后接动词原形。

　　情态动词各自的基本意义及用法

　　一、can 与could用法对比表

　　对比点 can could

　　1、表“能力” Can you lift this heavy box? I couldn’t understand what he said at all.

　　2、表“许可” You can use a different material instead. He said I could borrow his bike.

　　3、“怀疑” No, no, it can’t be true.

　　What on earth can this mean? We thought the story could not be true. How could you be so careless?

　　4、can与be able to 区别 1. could代替 can，表示语气更为婉转。

　　Eg. Could I use your bike? Yes, you can.

　　2. can (能够)=be able to(仅表能力时)，但be able to 表示一番努力后，才能做得到，且有万博体育app：的时态。

　　He was a good swimmer, so he __________ swim to the river bank when the boat sank.

　　A. could B. might C. shall D. was able to

　　二、may与 might用法对比表

　　对比点 may Might

　　1.表“询问” May I …?(=Can I …?) Might I …?(=Could I…?)(但比用may 更客气)

　　2.表“允许” You may take the boy there. He told me he might come .(might 与told相呼应)

　　3.表“可能”“或许” She may nor like this place. I’m afraid he might not like this play.

　　注： 1. May I…?的答语。

　　2.may可表示期望或祝愿

　　May you succeed !

　　3.may (might)用于目的状语从句中 肯定：Yes, you may.

　　否定：No, you mustn’t 不行(语气强硬)

　　No, you may not 或No, you’d better not.

　　The emperor gave them some gold in order that they might begin their work at once.

　　三、must与have to的用法对比表

　　对比点 must have to

　　1.表“必须” (主观看法)必须;没有过去式，可用于间接引语中。He told me I must do according to what he said. (客观需要)不得不，有多种时态。It’s raining heavily, we can’t go now.

　　2.疑问句 Must I …?

　　Yes, you must.(一定)

　　No, you needn’t./ you don’t have to.(不必) Do you have to go today?

　　Yes, we do.

　　否定句：You don’t have to worry about that.

万博体育app：相关信息<<[备考策略]