因?yàn)榍斑叺木渥邮荰he time was a quarter past five in the afternoon.And I was driving along the
road to fetch my daughter from her school.Our plan had been to go swimming
together.所以 后面的句子 用過去完成時(shí) 表示是在 a quarter past five以前 發(fā)生過的事 I可以跟時(shí)間點(diǎn) at about 4 o’clock連用 i had finished work at about 4 o’clock and then gone to the post
office.那現(xiàn)在完成時(shí)為什么不能加時(shí)間點(diǎn)？因?yàn)楸揪?at about 4 o’clock=before a quarter past five in the afternoon所以 本句可以用 過去完成時(shí) 如果 沒有前句完成時(shí) 是不能和 時(shí)間點(diǎn)連用的。前文：The time was a quarter past five in the afternoon. And I was driving along the road to fetch my daughter from her school. Our plan had been to go swimming together.第二句指當(dāng)時(shí)發(fā)生的動(dòng)作 第三句是 第二句動(dòng)作發(fā)生之前的打算 故用過去完成時(shí) 表示過去的過去