7A GRAMMAR past modals

a Read the conversations and the sentences in brackets. Then complete the conversations with might (not) have, must have, or can’t have + past participle. 1 A Why is there so much traffic today? B I don’t know. There might have been an accident. (maybe there was) 2 A Can you move your leg? B No, it hurts too much. I think I it. (perhaps I have broken it) 3 A Look! The gate’s open and the dog has gone. B Oh no! We it open when we went out. (I’m sure we left it open) 4 A Oh no, the cake’s burning! B You the oven on too high. (you definitely put the oven on) 5 A I can’t find the milk. We it all. (I’m sure we didn’t drink it) B Yes, you’re right. It must be in there somewhere. 6 A Where’s Jeremy? He should be here. B He the email about the meeting. (perhaps he didn’t see) 7 A Ellen passed all her exams with top marks! B Wow! She really hard. (I’m sure she worked) 8 A I’ve done my homework, Mum. I’m going out. B What? You all of it. Let me see it. (it’s impossible you’ve finished) 9 A We didn’t see Dan and Sarah at the concert. B They tickets. I think the concert was sold out. (perhaps they weren’t able to get) 10 A I called you earlier, but I got your voicemail. B Sorry. I my phone by mistake. (I’m sure I switched off) b Complete the sentences with should / shouldn’t have and the past participle of a verb from the list.

1 We’re lost. I knew we should have taken the second exit at the roundabout! 2 This tastes too spicy. You so much chilli. 3 You with James. He was perfect for you. 4 The concert was amazing. You with us. 5 Jim’s already gone? I don’t believe it – he for us. 6 I’m afraid we can’t exchange the jacket now. You the receipt. 7 You us that you were in hospital. We would have visited you. 8 I these jeans. They really don’t suit me. ACTIVATION

Write four conversations of two lines using must have, might have, can’t have, and should(n’t) have.