X13. Doublelines p65

7 might a
8 needn’t h
9 can b
10 don’t ... have to i
11 ought to f
12 should f
5 This exercise can be set for homework if time is short.
Answers
1 needn’t / don’t need to / don’t have to
2 can’t/cannot
3 must / has to
4 could/may/might 5 couldn’t
6 had to / needed to
7 ought
8 mustn’t / must not
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0521608759 - Objective IELTS Advanced Teacher’s Book
Michael Black and Annette Capel
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6 Ask students to read the information about corpus data
in the tinted box. Explain that the authors of Objective
IELTS have referred extensively to the Cambridge Learner
Corpus, which is the only collection of Cambridge ESOL
scripts of its kind. Reference to the Learner Corpus has
given the authors a much fuller picture of what IELTS
candidates can and can’t do, and this information has
influenced the course syllabus.
The sentences in exercise 6 come from the Cambridge
Academic Corpus, part of the 300-million word
Cambridge International Corpus. The authors have used
the Academic Corpus to establish which structures and
vocabulary are frequently used in academic English (both
British and American). This corpus has also provided
relevant examples.
Suggest students decide in pairs how certain the writer is
in statements 1–4. Explain that this use of modal verbs is
particularly common in academic English.
t e s t f o l d e r
1
11
Answers
In 1 and 2 the writer is unsure; in 3 and 4 the writer is
certain.