The perfect tenses – both
present and past – are
explained and used
prominently in most of these
readers. Many introduce the
passive voice, and most feature
the future tense. Nearly all of
them also include exercises to
develop understanding of the
first conditional, and some
include instruction in all three
conditional forms. More modal
verbs and more complex verbal
constructions – using gerunds
and infinitives – are presented.
There is a generally higher level
of vocabulary, sometimes quite
sophisticated.
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