The verbal group: tenses

are known
to
grow profusely on well-­‐decayed leaves and twigs in running streams and lakes. Their spores
were
first
observed
on stream surface scum by Ingold (1942). Since then, over 150 species

have

been described
but mostly from temperate countries. Few such fungi
have been
reported
from the tropics. This paper
presents
some observations made on a survey for
Ingoldian hyphomycetes in the local freshwaters.
(Tan and Lim, 1980:36)
1.
What tense is used to introduce the general topic to be discussed?
..........................................................................................................................................
2.
What tense (s) are used to discuss the previous research?
..........................................................................................................................................
3.
What tense is used to identify the aim of the paper?
..........................................................................................................................................
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You can now check the answers in the Answer Key at the back of the unit.

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Basic English Grammar Module: Unit 2B. Independent Learning Resources
© Learning Centre University of Sydney. This Unit may be copied for individual student use.
23
2.2.5 Editing Strategy
Finally, the practice you have had in this Unit in forming the verbal group correctly,
understanding the form and meanings of the tenses and choosing tenses appropriate for
the context should help you to edit your own writing.