Basics. Modal verbs to convey necessity, possibility, permission, or ability.: correct answers

Which of the following sentences expresses that it was necessary for the speaker to go to the dentist yesterday?

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"I had to" is used to express that something was necessary for the speaker to do in the past. The correct sentence is "I had to go to the dentist yesterday."

Which of the following sentences suggests that it is not a good idea to stay up late?

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"Shouldn't" is used to give advice or suggest that something is not a good idea. The correct sentence is "You shouldn't stay up late."

Which of the following sentences expresses that it is true that Sarah is very intelligent?

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"Must" is used to express a strong belief that something is true. The correct sentence is "Sarah must be very intelligent."

"May" can be used in the same way as "might" to express possibility. The correct sentence is "John may visit us this weekend."

Choose the correct sentence to express that it is possible that you will not go to the cinema tonight.

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To express the possibility of not doing something, we can use "might not." The correct sentence is "I might not go to the cinema tonight."

"Can" is used to make a polite request. The correct sentence is "Can you open the window, please?"

Choose the correct sentence to express that it is possible that it will rain tomorrow, but the weather forecast says it will be sunny.

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"Might" is used to express possibility, and "going to" is used to talk about the future based on present evidence (e.g., weather forecast). The correct sentence is "It might rain tomorrow, but the weather forecast says it is going to be sunny."

Which of the following sentences expresses that it is necessary for the speaker to finish their work?

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"I have to" is used to express that something is necessary for the speaker to do. The correct sentence is "I have to finish my work."

"Could" is used to make a polite request. The correct sentence is "Could you lend me a pen, please?"

Which of the following sentences suggests that it is a good idea to eat breakfast?

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"Should do" is used to give advice or suggest that something is a good idea. The correct sentence is "You should eat breakfast."

Which of the following sentences is expressing that it is not necessary for the speaker to wake up early?

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The correct negation of "I have to" is "I don't have to".

Which of the following sentences expresses that it is not true that John is at home?

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"Must not" is used to express a strong belief that something is not true. The correct sentence is "John must not be at home."

Which of the following sentences tells someone not to touch a hot stove?

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"Must not do" is used to express prohibition or to give a strong warning. The correct sentence is "You must not touch the hot stove."

Which of the following sentences expresses that it is necessary to study for the exam?

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"Must do" is used to express necessity. The correct sentence is "You must study for the exam."

Choose the correct sentence to express that Tom knows how to swim.

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"Can" is used to express the ability or knowledge of how to do something. The correct sentence is "Tom can swim."

Which of the following sentences suggests that it is the right thing to apologize?

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"Should do" is used to give advice or suggest that something is the right thing to do. The correct sentence is "You should apologize."

Choose the correct sentence to express that Lucy was able to play the piano when she was a child.

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"Could" is used to express past ability or knowledge of how to do something. The correct sentence is "Lucy could play the piano when she was a child."

"Could I" is used to make a polite request for permission. The correct sentence is "Could I use the bathroom, please?"

Choose the correct sentence to express that it is possible that Sarah will come to the party.

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To express possibility, we can use "might." The correct sentence is "Sarah might come to the party."

Which of the following questions asks if it is a good idea to take an umbrella?

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"Should I/we" is used in questions to ask for advice or to ask if something is a good idea. The correct question is "Should I take an umbrella?"

Which of the following sentences expresses the opinion that children should not watch too much TV?

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The correct sentence uses "I don't think ... should ..." to express an opinion against something. The correct sentence is "I don't think children should watch too much TV."

Which of the following sentences suggests that it is a good idea to exercise, but it is necessary to do homework?

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The correct sentence combines "should" for advice and "have to" for necessity. The correct sentence is "You should exercise, but you have to do your homework."

Which of the following sentences expresses that it was necessary to wake up early yesterday?

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"Had to" is used to express past necessity. The correct sentence is "I had to wake up early yesterday."