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模块九 Module IX Communicating with other cultures《Grammar and usage: Analysis of complicated sentences》新课标PPT课件优质课下载
2、对比易混时态的不同
语态
时态
主动
被动
一般现在时
do/does
am /is /are + done
一般过去时
did
was / were + done
一般将来时
will + do
will be + done
过去将来时
would + do
would be + done
现在完成时
have/has + done
have/has been + done
过去完成时
had+ done
had been + done
将来完成时
will have + done