1.neither ...nor.../either...or.../both...and.../not only...but also...
(1)Neither you nor I am new here,so please help the poor.(就近原则）
(2)Either Tom or Peter was robbed yesterday.(就近原则）
(3)Both Mr Wang and Mr Li have been to the USA.(王先生和李先生都去过美国）
(4)Not only Mr Wang but also Mr Li has been to the USA.(就近原则）
2.so that/so...that
(1)We work hard so that we can pass the coming exam.(为了通过即将到来的考试，我们努力学习)
(2)She walked so fast that I couldn t follow her.(她走得太快，我跟不上)
3.阻止。。。做。。。
(1)stop sb. (from) doing sth. (2)prevent sb. (from) doing sth. (3)keep sb. from doing sth.