Exercise1. Put in I must or I had to. Пример: I had to go the bank yesterday to get some money. 1)It's...

1) It's late, I must go now. 2) I don't usually work on Saturdays but last Saturday I had to work. 3) I went to London by train last week. The train was full and I had to stand all the way. 4) I must get up early tomorrow. I've got a lot to do. 5) I was nearly late for my appointment this morning, I had to run to get there on time. 6) I forgot to phone David yesterday, I must phone him later today.

1) I'm not ready yet but you needn't wait for me. You can go now and come later. 2) We mustn't forget to turn off the lights before we leave.

1) It's late and you're very tired, you should go to bed. 2) You should clean your teeth twice a day. 3) If you have time, you should visit the Science Museum. It's very interesting. 4) When you're driving, you should wear a seatbelt. 5) It's too far to walk from here to the station, you should take a taxi.

1) I might see you tomorrow. 2) Ann might forget to phone. 3) It might snow today. 4) I might be late tonight.

5) Mary might not be here. 6) I might not have time to meet you.

Let's go through each exercise step by step:

Exercise 1: Put in I must or I had to.

1) It's late, I must go now.

• "Must" is used here because it's a present necessity or obligation.

2) I don't usually work on Saturdays, but last Saturday I had to work.

• "Had to" is used for past necessity or obligation.

3) I went to London by train last week. The train was full and I had to stand all the way.

• Again, "had to" is appropriate because it describes a past necessity.

4) I must get up early tomorrow. I've got a lot to do.

• "Must" is used for future or present necessity.

5) I was nearly late for my appointment this morning and I had to run to get there on time.

• "Had to" is used here because it was a necessity in the past.

6) I forgot to phone David yesterday. I must phone him later today.

• "Must" is used to indicate a necessity or obligation in the present or near future.

Exercise 2: Complete the sentences. Use mustn't or needn't + one of these verbs: forget, wait.

1) I'm not ready yet, but you needn't wait for me. You can go now and come later.

• "Needn't" is used to indicate that waiting is not necessary.

2) We mustn't forget to turn off the lights before we leave.

• "Mustn't" is used to indicate a prohibition or strong advice against forgetting.

Exercise 3: Complete the sentences. Use you should + one of these verbs: clean, go, take, visit, watch, wear.

1) It's late and you're very tired. You should go to bed.

• "Should" is used to give advice or a recommendation.

2) You should clean your teeth twice a day.

• This is advice for maintaining good dental hygiene.

3) If you have time, you should visit the Science Museum. It's very interesting.

• "Should" is used to recommend an activity.

4) When you're driving, you should wear a seat belt.

• This is advice for safety.

5) It's too far to walk from here to the station. You should take a taxi.

• "Should" is used to suggest a practical solution.

Exercise 4: Write sentences with might.

1) (It's possible that I'll see you tomorrow) I might see you tomorrow.

• "Might" expresses a possibility.

2) (It's possible that Ann will forget to phone) Ann might forget to phone.

• Again, "might" is used to indicate a possibility.

3) (It's possible that it will snow today) It might snow today.

• "Might" suggests that snowing is a possible outcome.

4) (It's possible that I'll be late tonight) I might be late tonight.

• Here, "might" indicates the possibility of being late.

Write sentences with might not.

5) (It's possible that Mary will not be here) Mary might not be here.

• "Might not" is used to express a possibility of absence.

6) (It's possible that I won't have time to meet you) I might not have time to meet you.

• "Might not" indicates the possibility of not having enough time.

1) It's late, I must go now. 2) I don't usually work on Saturdays but last Saturday I had to work. 3) I went to London by train last week. The train was full and I had to stand all the way. 4) I must get up early tomorrow. I've got a lot to do. 5) I was nearly late for my appointment this morning so I had to run to get there on time. 6) I forgot to phone David yesterday, I must phone him later today.

1) I'm not ready yet but you needn't wait for me. You can go now and come later. 2) We mustn't forget to turn off the lights before we leave.

1) It's late and you're very tired, you should go to bed. 2) You should clean your teeth twice a day. 3) If you have time, you should visit the Science Museum. It's very interesting. 4) When you're driving, you should wear a seat belt. 5) It's too far to walk from here to the station. You should take a taxi.

1) I might see you tomorrow. 2) Ann might forget to phone. 3) It might snow today. 4) I might be late tonight.

5) Mary might not be here. 6) I might not have time to meet you.