这句子里面 for 的用法对吗?为什么im a belieber and my dream is for justin bieber to follow me back but if you follow me ill also follow you back能不能帮我分析一下句子成分

这句子里面 for 的用法对吗?为什么im a belieber and my dream is for justin bieber to follow me back but if you follow me ill also follow you back能不能帮我分析一下句子成分 请分析两句话的语法?I have been there twice.I have learned English for three years.第一句的twice是什么用法?为什么第二句用吧FOR?I have done that for three times这句话对吗? i'm sorry for i can’t help you这个句子对吗符合for的用法吗for是不是必须前有逗号,在句中能用吗,后面是不是只能加短语不能加句子? “Here are your umbrella and coat”和“I beg you parden”这两个句子的用法对吗? when i was young ,i have read the book for many times这个句子对吗?为什么? I'm sorry for missed the appointment.miss的用法对吗? I have been there.这句句子对吗?为什么? 这个句子中for 的用法I'm going to give you some medicine for that. 请您来指点一下这句话的用法Can I take a picture of you?(这句话是走遍美国里面的,关键是of这个词) 我看到有些句子说的是：Can you take a picture for me?用的是for,到底该用of还是for.这两个问句的of和for She likes to swim for ecercise.for的用法对吗? I'm sorry for what I said 为什么 said是过去式 以及for 的用法 just 的用法Please don‘t take offense.I just want to tell you what I think.在这句话里面,在句子中起什么作用? 请问wait for doing sth.这样的用法对吗? for语句的用法,for (int i = 1; i 动名词和现在分词的区别及用法.动名词和现在分词的区别及用法,不要长篇大论的,给我精髓和相应的例句.PEOPLE WAITING FOR THE BUS.这句话对吗,为什么? 帮我看看这句英文是不是正确的 Jack sent thanks and said good bye to everyone .这个句子里面send的用法对吗?可以说send thanks（表示感谢） 那算不算错呢? I need some warm clothes for winter.I need some warm clothes in winter.这两个句子都对吗? 问一个关于英文中yes 和no的用法看过很多美剧,里面都会有一些回答让我很奇怪.有人问：我们昨天聊得很愉快对吗?回答：no.we did.不懂为什么,还看到“你介意我拿走这把椅子吗?”如果回答no,i