We can use modal verbs for deduction – guessing if something is true using the available information. Modals – deduction (past): Grammar test 1 How did she fail that exam? She can't have studied very much. We don't know for sure that Alex broke the coffee table. don’t have to 20.Look at these examples to see how must, might, may, could, can't and couldn't are used in the past.Īn earthquake? That must have been terrifying!
Whenever it rang, he _ (always, yell), “I’m not here!” Usually, he was only joking and _(come) to the phone when it was for him.
My father never liked to talk on the phone. But he _ read or write because he never went to school.Ģ0. I _ get to sleep last night because it was too hot in my room.ġ9. Why _ all the nations of the world just get along in peace? Why are there always wars somewhere on the earth?ġ8. I _ swim long distances when I was a teenager.ġ7. Ellen is having a lot of trouble in her chemistry class. B: I think he _ join some clubs to meet people with similar interests.ġ3. I have some work I _ finish before I go to bed tonight.ġ2. Thank goodness we _ eat fish again tonight. If you have an aquarium, you _ give your tropical fish too much food or they’ll die.ĩ. To stay alive, people _ breathe oxygen.Ĩ. _ you give me some advice about buying a better one?ĥ. _ you please read it over for spelling errors?ģ. I wrote this paper for my literature class last night. (can, would, may, could, should, had better, must, have to, can’t, couldn’t, mustn’t, don’t have to)ġ. Notice that in some cases more than one modal may be used. (can) Exercise 3:Ĭomplete the following sentences with correct modal (or semi-modal) auxiliaries taken from the list given below.
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