初二英語：人教版下冊知識要點Unit 3
發(fā)布者：網(wǎng)上發(fā)布
Unit 3 What were you doing when the UFO arrived?
重點語法：過去進行時態(tài)
do/does 的過去進行時態(tài)形式：（was/were） doing
do/does 的過去進行時態(tài)的被動語態(tài)：（was/were） being done
過去將來時態(tài)的肯定句、否定句和疑問句形式：
肯定句例句：I was walking down the street when a UFO landed.
否定句例句：I wasn‘t walking down the street when a UFO landed.
一般疑問句例句：Were you walking down the street when a UFO landed?
特殊疑問句例句：What were you doing when a UFO landed?
動詞 when 和 while 的選擇：when 后加瞬間動詞，while 后加延續(xù)性動詞。
例句：The boy was walking down the street when the UFO landed.
=While the boy was walking down the street， the UFO landed.
感嘆句
結(jié)構(gòu)：（1） How + adj. + the + 主語 + 謂語動詞
=（2） What + （a/an） + [adj.] + n. + 主語 + 謂語動詞
例句：What a beautiful flower [it is]!
=How beautiful the flower is!
What beautiful flowers [they are]!
=How beautiful the flowers are!