such as 是雅思考试中一个大家很熟悉的词组，但是很多备考雅思的同学经常做的事情是记词汇替换譬如说like, for example, for instance, a case in point等等，却很少真正将such as这个词用准。
雅思替换讲解1 在句中出现，而不是句首，这个和for example区分很大
例：Many students are interested in some non-academic courses. For example, they like music and sports.
例：Many students are interested in some non-academic courses such as music and sports.
雅思替换讲解2 后面加名词或者动名词，不能加句子或者是动词
例：Children should be given more time to pursue some hobbies such as they play sport and learn music. (应该改成playing sport and learning music，动名词才可以)
雅思替换讲解3 such as 后一般不加逗号，直接加名词
雅思替换讲解4 一般加两个或者以上的名词或者是动名词;如果只加一个名词，一般前面不用加逗号;如果加好几个名词，往往such as前要加逗号
例：Countries such as New Zealand have a long record of welcoming refugees from all over the world.
雅思替换讲解5 一般紧跟在所解释的名词后，不能够中间用其他词或者内容隔开
例：Students are interested in several subjects in this course such as child abuse and malnutrition. (例子是解释subjects，不能放在in this course 后面)
改成：Students are interested in several subjects such as child abuse and malnutrition in this course.
雅思替换讲解6 such as 后面的名词必须是前面名词的解释，具备类似的性质
雅思替换讲解7 如果是单句的话，such as前面不需要用逗号，但是如果后面还有分句或者从句，要用逗号
试看下面剑6考官范文的一个句子：
Even when hildren use a computer for other purposes, such as getting information or emailing friends, it is no substitute for human interaction.
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