Basic English Grammar Module: Unit 2B. Independent Learning Resources
© Learning Centre University of Sydney. This Unit may be copied for individual student use.
24
Unit 2
B
:
Answer Key to Exercises
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Exercise 1: Answer
Base Form
's' Form
Present Participle
Past Form(s)
find
finds
finding
found
think
thinks
thinking
thought
determine
determines
determining
determined
choose
chooses
choosing
chosen
say
says
saying
said
mean
means
meaning
meant
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Exercise 2: Answer
(a)
(ii)
ecosystems consist of two parts
(b)
(i)
James Cook first arrived in Australia in 1770
(c)
(ii)
the experiments were conducted in the laboratory
(d)
(iv)
it has been suggested that lipids form in the arterial wall
(e)
(iii)
they are determining the levels now
(f)
(ii)
in the second trial it was noticed that a culture plate had been contaminated
(g)
(i)
they were doing this type of procedure in the 1890s
(h)
(iii)
the peroxide content is correlated with the degree of atherosclerosis
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