四、表语：接在系动词后，补充说明主语的情况又称为主语补足语。在写作中常做表语的有名词、形容词、V-ing、To do、从句五种。
1名词：The environmental problem isa serious problemin modern society.
2形容词：Time isfleetingand art islong.
3V-ing: The argument isconvincing.
4To do: A possible solution isto set down effective laws.
5从句：One advantage of computers’utilized in education isthat they can enrich the traditional teaching method to a great extent.
五、定语：修饰名词或类似于名词的词。一般翻译为“……..的”，表示事物性质或状态，分为前置或后置。在写作中常做定语的有形容词、名词、V-ing、To do、从句五种。
1形容词：Taking part-time jobs exertsprofoundimpacts on one’s future career development.
2名词：Generationgap is now a problem we have to face.
名词做定语(名词修饰名词重要原则：第一个名词一般用单数 以下为雅思写作常用名词修饰名词词组)
1 Information technology
2 Information center
3Credit card
4Generation gap
5Beauty contest
6Communication skills
7Information age
8Knowledge economy
9Peace talks
10Service industry
11Water scarcity
12Survival skills