Question

Michael was watching TV_____ his father came in.
A. when        B. while      C. as soon as

Answer 1

A

試題分析：A. when 當(dāng)…時(shí)候 B. while當(dāng)…時(shí)候      C. as soon as一…就；句意：邁克爾正在看電視時(shí)，他的爸爸進(jìn)來了。came這個(gè)動(dòng)詞是個(gè)瞬間動(dòng)詞，只能與when連用，故需A
點(diǎn)評(píng)：when 既可以與延續(xù)性動(dòng)詞連用，也可以與瞬間動(dòng)詞連用，而while只能與延續(xù)性的動(dòng)詞連用，強(qiáng)調(diào)兩者同時(shí)進(jìn)行，多用進(jìn)行時(shí)態(tài)的形式。