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必修4《Grammar》公开课PPT课件优质课下载
Rice ________(grow) in many Asian and some
European countries.
2. Yuan Longping ______________(bring up) in China.
3. The new hybrid rice _________________(develop)
by the Yuan Longping High-tech Agricultural Company
of China.
is grown
was brought up
has been developed
Revision of the text
active voice
passive voice
do/does
did
will, shall + do
am, is, are + doing
was, were + doing
has, have + done
had + done
would, should + do
am, is, are + done
was, were + done
will, shall, + be + done
am, is, are + being + done
was, were + being + done