写的还好,不过有几点语病：because without them最好改成without them因为because是连词,后面应接句子而不能接借此短语,without them是介词短语作原因状语；we have nobody to share in the happiness and the sadness of the life最好改成we have nobody to share my feeling in my life；much things最好改成many things,因为much修饰不可数名词的吧；we can get a lot of knowledge what school can't teach us.应该成we can get a lot of knowledge that school can't teach us.因为这里的that引导的是定语从句,而不能用what,what只能引导名词性从句.
最后祝愿您有大进步,我也正在学习英语.