Can & Can't Vs. Could & Couldn't
"Can" is used for ability in the present. What is the past form of "can"?
Could
What is a synonym of "can" that can be used in any tense?
Be able to
What is the past form of "must" when talking about obligation?
had to
What is a synonym of "must" that is often used in informal British English?
Have got to
Which word expresses a strong obligation: "should" or "must"?
Must
Which word fits best? "When I was younger, I ___ run very fast, but now I can't.
Could
Fill in the blank: "Right now, I can't drive, but in a few months, I ___.
Will be able to
Fill in the blank: "Yesterday, I ___ wake up early for a meeting.
Had to
Choose the correct sentence:
A) "I have got to finish my homework."
B) "I has got to finish my homework.
A) "I have got to finish my homework."
Fill in the blank: "You ___ eat too much junk food. It's unhealthy.
Shouldn't
True or False? "Couldn't" expresses both inability and prohibition.
True
True or False? "Be able to" is only used in the future.
false.
True or False? "Had to" expresses obligation in the future
False
Fill in the blank: "She ___ leave early today for an appointment.
has got to
What’s the difference between "mustn't" and "shouldn’t"?
"mustn't" expresses prohibition, while "shouldn't" is a suggestion.
Fill in the blank: "I ___ swim when I was five, but now I can.
Couldn't.
Choose the correct sentence:
A) "I was able to finish the test on time."
B) "I will able to finish the test on time.
A) I was able to finish the test on time.
Rewrite this sentence in the past: "I must call my friend.
I had to call my friend.
True or False? "Have got to" is commonly used in the past tense.
False.
True or False? "Must" is stronger than "should" when giving advice
True.
Rewrite the sentence using "couldn't": "It was impossible for me to understand the math problem.
I couldn't understand the math problem
Rewrite this sentence in the past using "be able to": "I can solve this problem."
I was able to solve this problem
What's the negative form of "had to"?
didn't have to
Rewrite the sentence using "have got to": "I must go now.
I have got to go now
Rewrite the sentence using "mustn't": "It's forbidden to smoke here.
You mustn't smoke here.