错误一：平行结构主谓不一致

Part-time job experience gives students an insight into what work is about and make them prepare psychologically for their future jobs.

解析：该平行结构省略了主语，主语为part-time job experience，and平行了两个谓语动词gives和make，但是make出现了主谓不一致的问题。

修改：Part-time job experience gives students an insight into what work is about and makes them prepare psychologically for their future jobs.

错误二：平行结构的主语不一致

Information that encourages racialism and terrorism threatens and should ban to purify the social environment.

解析：该句主语为information， 第二个and平行了两个谓语动词threatens和should ban，略主语。但是information无法主动发出should ban的动作，所以句子歧义。

修改：Information that encourages racialism and terrorism threatens andshould be banned to purify the social environment.

或：Information that encourages racialism and terrorism threatens andthe government should ban to purify the social environment.

错误三：省略后的平行部分结构不一致

Television takes up too much of our time. We no longer have enough time to afford hobbies, take part in entertaining activities, and to enjoy outdoor sports.

解析：该句平行三个不定式to afford，to take part in，to enjoy，但是在省略过程中，不定式的结构并未平行一致，同样改正的方式有两个，一个是变为to take;一个是删除to enjoy中的to.

修改：Television takes up too much of our time. We no longer have enough time to afford hobbies, to take part in entertaining activities, and to enjoy outdoor sports.

或：Television takes up too much of our time. We no longer have enough time to afford hobbies, take part in entertaining activities, and enjoyoutdoor sports.

总结

平行结构的省略用法在雅思口语写作中要确保平行结构主谓一致，省略的主语一致，以及平行结构一致。大家是否学会了呢?尝试一下应用到平常的练习中吧?