Supposed to

 "Supposed to" is a phrase that is used to describe an expectation or obligation that is based on an external source, such as rules, customs, or norms. Here are some examples and exercises to help you understand and use "supposed to":

Examples:

• "I'm supposed to be at work by 9 AM."
• "You're supposed to turn off your phone during the movie."
• "She's supposed to wear a uniform at her job."
• "We're supposed to finish the project by Friday."
• "They're supposed to arrive at the airport at 6 PM."

Exercises:

Exercise 1: Choose the correct form of "supposed to" to complete the sentences.

1. I __________ go to the dentist today, but I forgot my appointment. (was supposed to / supposed to)
2. You __________ turn in your homework by tomorrow. (are supposed to / supposed to)
3. He __________ be here by now, but he's running late. (is supposed to / supposed to)
4. We __________ buy tickets in advance for the concert. (are supposed to / supposed to)
5. They __________ not talk during the movie. (aren't supposed to / supposed to)

Answers:

1. was supposed to
2. are supposed to
3. is supposed to
4. are supposed to
5. aren't supposed to

Exercise 2: Rewrite the following sentences using "supposed to."

1. "I have to arrive at the airport before 6 AM." - "I __________ arrive at the airport before 6 AM."
2. "You must wear a helmet when you ride a bike." - "You __________ wear a helmet when you ride a bike."
3. "He needs to turn in the report by the end of the day." - "He __________ turn in the report by the end of the day."
4. "We are required to attend the meeting." - "We __________ attend the meeting."
5. "They are obligated to follow the safety guidelines." - "They __________ follow the safety guidelines."

Answers:

1. am supposed to
2. are supposed to
3. is supposed to
4. are supposed to
5. are supposed to

Exercise 3: Complete the sentences with the correct form of "supposed to."

1. You __________ know how to swim if you're going to the beach.
2. We __________ leave early if we want to avoid traffic.
3. He __________ return the book to the library by the due date.
4. They __________ bring their own supplies to the camping trip.
5. I __________ call my mom every Sunday, but sometimes I forget.

Answers:

1. are supposed to
2. are supposed to
3. is supposed to
4. are supposed to
5. am supposed to

It's important to note that "supposed to" is used to describe an expectation or obligation that is based on an external source. It can be used to describe both formal and informal situations, and it is often used in everyday conversation. When using "supposed to," it's important to consider the context and the source of the expectation or obligation, as it can vary depending on the situation.