Page 103 - Think 3. Teacher's Book B3+

Unit 9
It’s a mystery! Grammar; Functions; Vocabulary

4 1 c 2 b 3 a RULE: 1 rule 2
2 rule 1 3 rule 3 IT’S A MYSTERY! UNIT 9
GRAMMAR FUNCTIONS
5 Ask students to quickly read the Modals of deduction (past) Making deductions
conversation and answer the 4 Match 1–3 with a–c. Check your answers in the 6 Read the text and complete the sentences
question: Who ate the cake? article on page 88. Then match sentences 1–3 with with your opinions. Use can’t, must or might.
might
(Matt). They should ignore the the rules.
spaces at this point and just focus 1 You can’t have a made a lot of money! In 1998, Russian scientists found a
meteorite with a metal screw in it.
2 The dress could have
b been in shadow or in
on gist understanding. 3 The retailer must the light. The rock is at least 300 million years
1 must have been 2 can’t have have c missed it! old. At that time, there weren’t even
any dinosaurs on the planet.
eaten 3 might/may/could have RULE:
taken 4 can’t have been To say something was possibly the case in 1 It be fake.
have been intelligent
2 There
the past, we use might / could / may + have +
5 must have jumped 6 can’t have got past participle. life on Earth 300 million years ago.

7 might/may/could have eaten To say something was definitely not the case 3 I think someone have made it as a joke.
in the past, we use couldn’t / can’t + have +
8 must have been past participle. 4 It be from another planet.
5 The scientists
have lied about it.
Workbook p83 To say something was definitely the case in

the past, we use must + have + past participle. 7 SPEAKING
SPEAKING Work in pairs. Discuss your ideas.
6 Check/clarify: meteorite, metal 5 Complete the conversation. Use suitable modals
screw. and the correct forms of the verbs in brackets. VOCABULARY
Look at the picture and ask ‘The Case of the Missing Cake’ Expressions with go
students to read the text to find Oliver What?! My cake! It’s gone! 8 Find expressions 1–8 in the text on page 88.
Really?
out what’s strange. They then Matt Match them with the definitions.
Oliver Yes, it was here an hour ago and now it isn’t.
a do something extra
1 go for
complete the sentences with their Who’s taken it? 2 go one step further b be satisfactory
own opinions. Matt What about Dad? I heard him saying 3 go viral c become very excited about
how hungry he was. In fact, I’m sure it 4 go well something
1 (be) Dad. 5 go crazy d be obvious
7 Challenge students to try to Oliver No, he 2 (eat) it. 6 go up e be shared by many people
convince their partners that their It was chocolate. Dad doesn’t like chocolate. 7 go without saying on the internet
That’s true. I suppose Mum
opinion is the ‘right’ one. Matt 3 (take) it, maybe? 8 go on f continue
g choose
Oliver No, it 4 (be) Mum. h increase
She’s been out all morning.
8 Encourage students to use the Matt The dog! He 5 (jump) 9 Complete the sentences with the correct forms of
the expressions in Exercise 8.
onto the table and eaten it. That dog’s always
context of the text to help them doing things like that. 1 The party’s , I think.
complete the exercise. Oliver Are you mad? The cake was in the fridge. The Everyone’s having fun. that your mum and

1 g 2 a 3 e 4 b 5 c 6 h Matt dog 6 (got) to it. 2 It
I will support you in your decision!
Are you sure it wasn’t you? I mean, you
7 d 8 f 7 (eat) it and 3 The football fans when
forgotten. their team won the match.
9 Tell students to be careful to put Oliver I’m quite sure it wasn’t me. So if it wasn’t me, 4 I the red one. It’s cool.
Mum, Dad or the dog, that leaves one person.
5 He posted the photo and within days it
go into the correct tense. It 8 (be) you, Matt! !
1 going well 2 goes without saying Matt What?! Me? 6 I drew a picture of my dream house. My brother
and built it.

3 went crazy 4 went for 5 went Oliver Yes, and that explains why you’ve got chocolate 7 The price of bread has continued to
all round your mouth!
viral 6 went one step further workbook page 83 .
7 go up 8 went on 8 It was raining but we still playing. We didn’t stop.

Workbook p84
workbook page 84
89
Homework
Ask students to research another
mystery from around the world. Activity idea Extension
They can upload a picture with a Draw a picture of a sad man on the board as follows: draw the first line of
description of the mystery in English. the picture (perhaps his chin) and ask students to guess what the drawing is.
If students do not have access to the Encourage them to use modals of deduction: might, could, must. Elicit that
internet, they can create their own might and could have similar meanings in this context but must indicates that
ideas. As a follow-up, students can you are sure. Add a few more lines (an eyebrow, part of his ear) to the drawing
bring the picture to the next lesson and prompt students to speculate a bit more. Continue until you have nearly
and present their mystery so the finished the drawing and invite them to comment again.
class can make deductions about it.
Next, ask students to speculate why the man is sad. Listen to some of their
ideas. Elicit/remind students that if we want to use a modal verb to describe the
Language note Modals of past, we use: modal + have + past participle, for example he might have failed
deduction (past) an exam.
Students may use *It mustn’t have
been … when they want to say
something is definitely not true. more
We need to say It can’t have been or
It couldn’t have been … in this case. Practice Extra Workbook Worksheets
Unit 9 Practise it! Grammar p83, Ex.6–8 Grammar Worksheets 9
Vocabulary p84, Ex.3–4 Vocabulary Worksheets 9
Unit 9 | It’s a mystery! T89