1.I'm very interested in knowing what life is like in a Chinese high school.
Knowing what life is like in a Chinese high school(is interesting to)me.
Knowing what life is like in a Chinese high school(interests me)greatly.
2.I didn't realize how different schools in the UK are from schools in China until I read your article.
Not(until)I read your article did(I know)how different schools in the UK are from schools in China.
It(was until)I read your article (that)I(knew)how different schools in the UK are from schools in China.
有什么不懂或错误的话,在百度Hi上找我好了