Modal verbs: should and ought Modal verbs: should and ought toto

We can use the modal verbs

shouldshould and ought toought to to say what is

best or right to do.

shouldshould and ought toought to are similar in meaning.

What does they do wrong ?

We use shouldshould and ought toought to with other verbs.

These verbs do not change their from do not change their from after the modal verbs.after the modal verbs. Wrong? If so, correct itWrong? If so, correct it

We should talk it over.

He should to ask for suggestions.

You ought to concluded the meeting.

They ought take notes.

She should votes for herself.to

In short: 任何主语 + should do + ought to do

Fill in a verb and then make the sentences into negative form.

1.He should _____ responsible for it.

2.You ought to _____ such a decision.

Fill in a verb and then make the sentences into questions.

3. While listening, we should ____________.

4.Before listening, we ought to _______ the article quickly.

make

concentrate

go over

He should not be responsible for it.

Ought we to go over the article ?

be

You ought not to make such a decision.

Should we concentrate?

should 和 ought to 的意思都是“应该”，用于表达①恰当的建议，②纠正别人的错误，③有责任。

should 的语气比较委婉更常用， ought to 的语气比较强，有时带有责备或督促的意味。

should 和 ought to 在用法上要注意以下几点： 1. 本身没有数和时态形式的变化。 2. 后面接动词原形。 3. 可用来构成否定句、疑问句及简明答语。

总结：情态动词总结：情态动词 should should 和和 ought ought toto

should 和 ought to 的句式：肯定句 :I should do…

I ought to do…

否定句 :I should not( 缩写 shouldn’t)do …

I ought not( 缩写 oughtn’t)to do…

疑问句： Should I do…? 回答 :Yes, I should.

No, I shouldn’t. Ought he to do…? 回答： Yes, he ought to. No, he ought not to.

Usage 2 correcting people

.

She is

typewriter

He is a good cooker.