Modal Verbs

Choose the correct modal verb for theoretical possibility:

• must

• can

• have to

• may

Answer explanation

"Can" is used to express theoretical possibility, indicating that something is possible or allowed to happen. It suggests that there is a chance of the event occurring.

Which modal verb is used to express certainty in the present?

• may

• should

• must

• could

Answer explanation

"Must" is used to express certainty in the present. It indicates a strong belief or conviction about a situation or fact.

Select the correct form to express lack of obligation in the past:

• don't have to

• didn't have to

• needn't have

• won't have to

Answer explanation

"Needn't have" is used to say that something was unnecessary in the past, but it was done anyway. It suggests that there was no obligation to do it.

"She __________ be studying for the exam right now."

• should

• might

• must

• can

Answer explanation

"Might" is used to express a possibility or uncertainty in the present. In this sentence, it suggests that there is a possibility that she is studying for the exam right now, but it is not certain.

Which modal verb is used to give advice?

• could

• ought to

• had to

• might

Answer explanation

"Ought to" is used to give advice or make recommendations about what someone should do. It implies a sense of duty or moral obligation.

Choose the correct option for expressing future possibility:

• He may go to the party tonight.

• He will goes to the party tonight.

• He might goes to the party tonight.

• He might go to the party tonight.

Answer explanation

"Might" + base verb is used to express future possibility. In this sentence, it suggests that there is a chance he will go to the party tonight.

"You __________ come to the concert if you don't want to."

• have to

• might

• should

• mustn't

Answer explanation

"Mustn't" is used to express prohibition or strong advice against doing something. In this sentence, it suggests that coming to the concert is not allowed or advised if you don't want to.

What is the correct form to express unfulfilled ability in the past?

• could have

• can have

• might have

• should have

Answer explanation

"Could have" + past participle is used to express unfulfilled ability or potential in the past. It indicates that someone had the possibility to do something but didn't do it.

Choose the appropriate modal verb to express past certainty:

• must

• should

• will

• shall

Answer explanation

"Must" is also used to express certainty in the past. It indicates a strong belief or conviction about a situation or fact that occurred in the past.

"I _________ have left my keys at home; I'm not sure."

• could

• might

• can

• will

Answer explanation

"Might" is used to express uncertainty or possibility in the past. It indicates that there is a chance the speaker left the keys at home, but they are not sure.