Ought to & Should

How to use “OUGHT TO” in a sentence?

“Ought to”

Ought to + (Verb)

It is used to advise or to recommend someone something.

“Ought to” also tells us about expectations as well as strong probability or possibility.
For the negatives:

“Ought not” (delete ‘to’ while making negatives) It is used to advise against doing something, although people prefer the less formal forms “should not” or “had better not.”
Examples:

You ought to stop smoking. (It is a recommendation)

Ram ought to get the promotion because he deserves it.

Ram ought not drink so much. (advice against something also notice there is no “to”)

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We shall try to use OUGHT TO in different forms. (Present, Past, and Future)
ought to:

recommendation, advice

1. Sheena ought to study hard. (Present)

2. Sheena ought to have studied hard so she would be better prepared for the examination. (Past)

3. Sheena ought to study hard with us tonight. (Future)

Negatives:

1. Sheena ought not study too much. It might cause her a headache. (Present Negative)
2. Sheena ought not have studied so much. She wasn’t keeping well. (Past Negative)

3. Sheena ought not study at home in front of the TV tonight. (Future Negative)

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Should & Ought to

assumption, expectation, probability

1. She ought to have the package by now. (Present)

She should have the package by now.

2. She ought to have received the package yesterday. (Past)

She should have received the package yesterday.

3. She ought to receive the package tonight. (Future)

She should receive the package tonight.

4) You ought not smoke so much. (Negative Present)

You should not smoke so much.

5) She ought not have taken such risks while diving. (Negative Past)

She should not have taken such risks while diving.

6) They ought not carry so much cash while traveling tomorrow. (Negative Future)

They should not carry so much cash while traveling tomorrow.