【正文】
。 單元語法聚焦五 4. when和 while的區(qū)別: (1)引導(dǎo)時(shí)間狀語從句時(shí), while 連接的是時(shí)間段或與延續(xù)性動(dòng)詞連用,而 when既可以連接時(shí)間點(diǎn),又可以連接時(shí)間段; when既可以與延續(xù)性動(dòng)詞連用,又可以與短暫性動(dòng)詞連用。 Unit 5 What were you doing when the rainstorm came? 單元語法聚焦五 單元語法聚焦五 語 法 精 講 語 法 精 練 Unit 5 What were you doing when the rainstorm came? 過去進(jìn)行時(shí) 1.構(gòu)成:主語+ was/were+動(dòng)詞的現(xiàn)在分詞+其他. 2.用法: 過去進(jìn)行時(shí)主要表示過去某一時(shí)間或在某一個(gè)時(shí)間段內(nèi)正在進(jìn)行的動(dòng)作。如: While we were talking, the teacher came in. 當(dāng)我們正在交談時(shí),老師進(jìn)來了。如: When were you born?你是什么時(shí)候出生的? 單元語法聚焦五 ( ) 蘇州 — Why are you so late today? — Three buses went by without stopping while I ________ at the bus sto