模仿造句
　　句子结构
　　A could negatively affect B if C
　　结构来源
　　The presence of celebrities in advertisements could negatively affect the children”s perceptions of a product if the children did not like the celebrity in question.
　　[译] 如果儿童不喜欢这位涉及到的名人，名人在广告中出现可能会不利于儿童对产品的感觉。
　　*此句出自TPO阅读文章中。
　　结构解析 此结构可表达“如果满足条件C(在C情况下)，A会对B产生负面影响”的意思。在很多问到个人观点或者支持与否的题目中，这个句型可以用于描述你反对或者不倾向的那个选择。或者，也可以用在对你的论点进行让步，保持论证的严谨性上。
　　模仿使用
　　Porn could not negatively affect teenagers if national legislations are established.
　　[译] 如果国家立法，色情就不会对青少年产生负面影响。
　　适用题目举例
　　TOEFL Writing 7
　　How do movies or television influence people's behavior? Use reasons and specific examples to support your answer.
　　TOEFL Writing 119
　　Do you agree or disagree with the following statement? People behave differently when they wear different clothes. Do you agree that different clothes influence the way people behave? Use specific examples to support your answer.