1.I had a letter from my sister yesterday.
昨天我收到了姐姐一封信。
知识点：本句等于：I received a letter from my sister yesterday.
如果这么表达则与Lesson4课文第一句句型相同。
2.She lives in Nigeria. In her letter, she said that she would come to England next year.
她住在尼日利亚。在信中她说明年地将来英国。
3.The house was completed five months ago.
五个月前房子竣工了。
知识点：was completed表明房子是过去被完工。
此句变为主动：We completed the house five months ago.
4.In my letter. I told her that she could stay with us.
我在信中告诉她，她可以和我们住在一起。
此句变为直接引语：I told her,“You can stay with us.”
