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1、托福写作：主语从句和定语从句托福写作：主语从句和定语从句一、主语从句：用一、主语从句：用 that 或或 wh-词引导的从句作为主句的主语名词。词引导的从句作为主句的主语名词。1. whether 引导的主语从句例：Whether the increase of fuel price can solve the worlds environmental problem is a controversial issue.Whether universities should provides students with practical skills or academic knowledge
2、 is a controversial issue.2.先行词 it 开始的主语从句例：It is obvious that we are living in an information age.It is obvious that investing in education is investing in ones future.3.what 引导的主语从句例：What the government should do is to create policies to encourage low carbon development.What most companies and wor
3、kforces need are not robots, but creative people who can contribute ideas.What the poor countries need most is not money, but advanced technologies and talents in some key areas.二、定语从句二、定语从句1 who 引导，修饰“人”例：Those who feel that sports stars salaries are justified might argue that the number of profess
4、ionals with real talent are very few.Students without teachers will surely be lost; but students who simply rely on teachers for knowledge arent really learning.Children who enter school at an early age are generally more confident and independent than children who stay at home with their parents.2.
5、that 引导，修饰“物”例: Likewise,economics is a fundamental discipline that allows societies to be stable and move forward.The workload that could take months to finish by manual labor could be done flawlessly by robots in minutes.How to handle criminals is a problem (that) all countries and societies face.
6、 (that 在定语从句中做宾语可省略)3. 逗号后加逗号后加 which 引导，修饰前面的整个句子（非限制性定语从句）引导，修饰前面的整个句子（非限制性定语从句）例 If fuel prices go up, either fewer people will drive or people will drive less, which makes sense for reducing polltion.Demand for various commodities creates a huge market for the local and international businesses,which in trun increases demand for the labor market.Government should develop and launch a good traddic control system, which can monitior and facilitate traffic flows on major roads for better and safer road usage,reducing the chances of accidents.
