Question

4．就在他過馬路的時(shí)候，他的手機(jī)被偷了．His mobile phone was stolen when/while he was crossing the road．

Answer 1

分析 His mobile phone was stolen when/while he was crossing the road．

解答 答案：His mobile phone was stolen when/while he was crossing the road．這里是說過去的事情用過去時(shí)，他的手機(jī)被偷了是主句，用一般過去時(shí)，主語His mobile phone，是動(dòng)詞steal偷的承受者，故構(gòu)成被動(dòng)關(guān)系，故用一般過去時(shí)的被動(dòng)語態(tài)was/were+過去分詞，主語是單數(shù)故用was，steal的過去分詞是stolen，故His mobile phone was stolen，從句是由when/while引導(dǎo)的時(shí)間狀語從句表示當(dāng)…時(shí)候，就在他過馬路的時(shí)候，過馬路和手機(jī)被偷兩個(gè)動(dòng)作同時(shí)發(fā)生，故用過去進(jìn)行時(shí)was/were+現(xiàn)在分詞，主語是he三單，故he was，過馬路用cross the road，故when/while he was crossing the road，故答案是His mobile phone was stolen when/while he was crossing the road．

點(diǎn)評(píng) When和While的區(qū)別 
①when是at or during the time that，既指時(shí)間點(diǎn)，也可指一段時(shí)間，while是during the time that，只指一段時(shí)間，因此when引導(dǎo)的時(shí)間狀語從句中的動(dòng)詞可以是終止性動(dòng)詞，也可以是延續(xù)性動(dòng)詞，而while從句中的動(dòng)詞必須是延續(xù)性動(dòng)詞．
②when 說明從句的動(dòng)作和主句的動(dòng)作可以是同時(shí)，也可以是先后發(fā)生；while 則強(qiáng)調(diào)主句的動(dòng)作在從句動(dòng)作的發(fā)生的過程中或主從句兩個(gè)動(dòng)作同時(shí)發(fā)生．
③由when引導(dǎo)的時(shí)間狀語從句，主句用過去進(jìn)行時(shí)，從句應(yīng)用一般過去時(shí)；如果從句和主句的動(dòng)作同時(shí)發(fā)生，兩句都用過去進(jìn)行時(shí)的時(shí)候，多用while引導(dǎo)，如：
When the teacher came in，we were talking．當(dāng)此句改變主從句的位置時(shí)，則為：While we were talking，the teacher came in．