亦难幸福1） He was born in May. 2） He was born on May 23.
句中due的意思是“到期”，例如：The books are due， I have to return them to the library. （书到期了，我得去图书馆还书。）
请翻译下面的句子，注意due在不同语境下的其他意思：
1） The train is due to arrive at 8：00.（火车定于八点钟到达。）
2） The baby is due in the middle of October.（婴儿的预产期为十月中旬。）
3） Due attention should be paid to this work.（应该给这项工作以适当的关注。）
4） Old people expect to be treated with the respect due to their age.（老人们期望受到他们这个年龄的人应得的尊敬。）
5） His death was due to heart attack.（他的死是由心脏病引起的。）
7. Some states have an income tax similar to that of the federal government. 句中的that用来代替the加前述名词tax，以免重复。
请翻译下面的句子：
1） 南京的天气比青岛的天气热。（The weather of Nanjing is hotter than that of Qingdao.）
2） 黄金的价格比白银的价格要高。（The price of gold is higher than that of silver.）
8. Other states have a sales tax， which is a percentage charged to any item which you buy in that state.
