处为if引导的条件状语从句。if意为“如果”,不能换成whether。Р3.话题知识与写作РⅠ.1.The Spring Festival always reminds us of the family reunion.Р2.There are all kinds of activities during the Spring Festival.Р3.Children especially look forward to the Spring Festival.Р4.It’s also a good time for adults.Р5.They can express appreciation, make an apology or forgive.Р6.It is a pity that some people can’t turn up at such a great festival for a variety of reasons.РⅡ.[参考范文]Р The Spring Festival always reminds us of the family reunion, during which there are all kinds of activities. As a result, children especially look forward to it. It’s also a good time for adults, for they can express appreciation, make an apology or forgive. However, it is a pity that some people can’t turn up at such a great festival for a variety of reasons.