Modal verbs show possibility, intent, ability, or necessity and are used to modify the meaning of verbs. Common modal verbs include can, could, must, should, have to, and need to. Modal verbs are used to express abilities, possibilities, permissions, obligations, and certainties in actions.

1. Modal Verbs

2. What is a modal verb?
Modal verbs show possibility, intent, ability, or necessity. Common examples include:
can, could, must, should, have to, and need to.
I exercise everyday.
I should exercise everyday.
I have to exercise everyday.
I could exercise everyday.
I need to exercise everyday.

3. can,can’t,could,couldn’t
1. He's amazing, he _______speak five languages, including Chinese.
2. We______get to the meeting on time yesterday, because the train was delayed
by one hour.
3. I looked everywhere for my glasses but I _______find them anywhere.
4. I______lift this box - it's too heavy! Would you help me?
5. When the car broke down I was really pleased because I _______solve the
problem.

4. must or can’t
1. Why is that man looking around like that? He______be lost.
2. Who's that at the door? It ______be Susie - she'll still be at work now.
3. Where's Lucy? She ______be at the library, as she often goes there at this time.
4. There ______be something wrong with the fridge! It's making a very unusual
noise.
5. This bill______be right! £50 for two cups of coffee!

5. might or will
1. I promise I ____________ wash my clothes today.
2. Ms. CJ ____________ be your teacher next school year because she
is one of the three teachers who teach third grade.
3. We’re visiting uncle Reuben. ____________ you come with us?
4. I know the traffic ____________ be bad because of the concert this
weekend.