Question

When the old man ______ to walk back to his house, the sun       itself behind the
mountain. 

A．started; had already hidden	B．had started ;had already hidden
C．had started; was hiding	D．was starting; hid

Answer 1

A

試題分析：考查時(shí)態(tài)。句意：當(dāng)老人開始走回家的時(shí)候，太陽已經(jīng)下山了。說明太陽下山是在老人回家之前。老人回家用過去時(shí)，太陽下山用過去完成時(shí)。這兩句的時(shí)態(tài)要一致，故A正確。
點(diǎn)評(píng)：過去完成時(shí)一定要注意時(shí)間的起點(diǎn)，它不是的是過去的過去，要找到時(shí)間的參照點(diǎn)。