这句话中为什么加个times?在句中起着什么作用I have three times as many as you.

这句话中为什么加个times?在句中起着什么作用I have three times as many as you. he eats hamburgers 2 times a week,这句话中,为什么hamburger 加了 s 在何情况不加? He himself has done it lots of times.这句话中himself做什么成分?为什么放在这个位置 i have been there (for) three times.这句话中括号中的for一定要加吗? The world's population has grown by more than six times that it was in1800 这句话中more than six times 为什么不用six times more than 英语翻译我是个英语白痴,自学英语中,谁能帮我解释一下这句话的意思,以及为什么这么写.为什么要加在thinking后面? I know him better than you do.这句话中为什么最后加了个do on college student' absence from class这句话中student'为什么加个' i have been there （for） four times.这句话中括号里的for要加吗?可不可以不加? you way havn noticed that you feel hungry a lot,even if you eat three meals a day at regular times 这句话中noticed为什么要加d呢?that后面是什么从句呢?错了 是you may I have beent to Beijing for three times.I have been to Shanghai for once.这两句话对么?是不是不能加for 为什么不用加for啊? Prastise your talk two or three of times first.这句话中times如何理解? 在There is always something happening.这句话中happen为什么要加ing Thank you for your helping me.在这句话中help为什么加ing? 为什么once(一次)不用加times six times(六次)就要加TIMES 为什么呢 He acted as if he had never lived in England before.这句话中为什么最后加了个before have hard times对不对? have a hard time 在这time是不可数的 为什么可以加a? He himself has done it lots of times为什么it 后面不加for呢,现在完成时不应该是for lots times,这句话是我从新概念复制下来的,请高手帮我解析下