Modal Verbs
Modal Perfects
Noun Formation (Suffixes)
Correct the Sentence
Mixed Bag
100

When you want permission, you use ____.

can

100

Complete: "You ___ have locked the door before leaving."

must have

100

Add a suffix to "act" to make a noun.

action

100

Correct: "He can to swim well."

He can swim well.

100

What's the negative form of "must"?

must not (mustn’t)

200

You ___ study more if you want to pass.

should

200

Complete: "He ___ have studied harder, but he didn’t."

should have

200

What noun comes from "inform"?

information

200

Find the mistake: "You must to go now."

Remove "to" → "You must go now."

200

Complete: "They ____ (not be) at home. The lights are off."

can’t be

300

Which modal verb expresses obligation?

must or have to

300

What's the difference between "could have" and "should have"?

Could have = possibility; Should have = expectation but didn't happen

300

What noun comes from "employ"?

employment

300

Fix the mistake: "She should studied more for the test."

She should have studied more for the test.

300

What’s the noun form of "agree"?

agreement

400

Give two modal verbs for making polite requests.

could, would

400

Rewrite: "She didn't need to bring food." (Use a modal perfect.)

She needn’t have brought food.

400

Change "decide" into a noun and use it in a sentence.

decision – "That was a difficult decision to make."

400

Identify the error: "He must has gone home."

He must have gone home.

400

Correct this sentence: "She must have go to the store."

She must have gone to the store.

500

Explain the difference between "must" and "have to."

Must = strong obligation (speaker’s decision), Have to = external necessity

500

Explain the meaning of: "He must have forgotten his phone."

It means "I’m sure he forgot his phone."

500

Identify two different noun suffixes and their meanings.

"-ment" (process/result), "-er" (person who does something)

500

Rewrite: "She doesn't can drive a car."

She can’t drive a car.

500

Explain why "might have" and "could have" express uncertainty.

Both express uncertainty about the past.