定语从句在句中修饰某个名词或代词，被定语从句修饰的词叫先行词。定语从句需用下列关联词：关系代词，关系副词起连词作用，本身做从句的主语、宾语、表语或定语 起连词作用，本身在从句中作时间、地点或原因状语 who， whom， that， whose， which， as when， where， why.
①(名词或代词) is the kind of (person/place/thing…) who (which/that) is…
②(名词或代词) is a (person/ place…) who (which) gives you the impression of being…
③(名词或代词)is one of the most (形容词) (名词) I have ever seen/met/known.
④(地点名称) is a place where you can do sth.
⑤(时间名词) is a day (occasion/the time) when you do sth.
例如：
He is truly helpful. 他很乐于助人。
a. He is the kind of guy who is truly helpful.
b. He always gives others the impression of being someone who is truly helpful.
Suzhou is ancient but also modern. 苏州不仅具有古老的文化底蕴，还颇有现代气息。
a. Suzhou is the kind of city which gives you the impression of being both ancient and modern.
b. Suzhou is a place where you can appreciate both the ancient culture and modern city lifestyle.
The film is interesting. 这是一部有趣的电影。
a. This is one of the most interesting films I have ever seen.
b. This is the kind of movie which blows your mind.
说明：雅思口语话题频繁涉及人物，地点，物品，事件四大类，上表中的原句是在回答此类问题时多数考生使用的句型。其缺陷是过于简短，一不能体现语法优势，二不能凑字数争取时间。而套用句型后的表达效果就明显不一样了。可见，定语从句的使用在口语中可以起到包装，修饰的作用。

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