请好心人帮我看下我的定语从句这样写可以吗

定语从句没问题,但是在形容词修饰上有问题,应该是be+形容词+to sb/sth的形式
Culture shock brings a lot of effects which are positive or negative to people.
也可以用a lot直接作为先行词,从句则采用have/has an effect on sb/sth(对...有影响)的形式
Culture shock brings a lot which have a positive or negative effect on people.
当然普通的陈述句也可表达
Culture shock brings people a lot of positive or negative effects.
当然也可以采用宾语从句的形式
Culture shock brings a lot of what have a positive or negative effect on people.

语法上有些问题，这样好一些：
Culture shock brings a lot of effects that are either positive or negative to people.

这个句子有点语法问题耶，我的建议：
Culture shock brings a lot of effects which are positive or negative for people.
或者：Culture shock brings a lot of positive and negative effects for people.

可以

定语没问题，但是从句的语法有错误。
从句应该是 which ARE positive or negative TO people.
effects 是复数，所以用are ，消极和积极不可以同现，所以and 改为 or，采用的句型应该是 be+adj+to+n
完整的句子是：
Culture shock brings a lot of effects which a...