1.去年我在北京住了三个多月。 了1 after verb indicates the action already happened. I lived in Beijing in last year, this happened already. eg. 我已经吃了早饭。 2.去年我在北京住三个多月了。 了2 at the end of the sentence indicates something new has happened. I didn't live in Beijing before but now I lived there for three months. It is a new situation which is different from before. eg.现在八点，我吃早饭了。 Maybe I didn't have breakfast when it was 7:00, but things changed when it was 8:00. 3.去年我在北京住了三个多月了。 It is easy for you now, right? It is a combination of the use of 了1 and 了2. Meaning the action is done and something has happened. eg. 我吃了早饭了。The first 了 means the breakfast was done, the second 了 means this situation is new, which is different from I didn't have breakfast. In conclusion, we can decide the position of 了 according to the function of it. Verb+了 means the action is done, already finished Sentence+了 means something new has happened It is acceptable to use two 了 at the same time.

你好！Francesca. I will illustrate this question in two aspects. The basic use and special use. The basic meaning of 都 is all。In statement sentence, we put it after the object（target). For example: 我们都相信你。我们 object（target)+都 我们班每个人的汉语都不错。我们班每个人的汉语object（target)+都 Here is a special use in question sentence, we should put 都 before the object（target). For example: 1.你去过哪儿？ Where have you been？ If we add a 都， 你都去过哪儿？ Where have you all been?( All the places you have been to) 2.老师刚刚说了什么？ What did the teacher say just now? If we add a 都， 老师刚刚都说了什么？ What did the teacher all say just now?(All the words the teacher said) So if we add a 都 in the question sentence， it stresses all the contents corresponding to the question word.

房间号，106房间，yao1/yi1 ling1 liu6 fang2 jian1. 三位的公交车号码 317路 san3 yao1/yi1 qi7 lu4. But most of time if the first number is one, we read it yao1 for telephone or QQ number. 15872152740. yao1 wu5 ba1****** And double one we read yao1 yao1, because yi1 yi1 is not easy to pronounce. 15674201128. ******yao1 yao1 er2 ba1 But when it comes to room number or bus number, it is not that necessary to read yao1, yi1 also can be read.

你好。汉语中’福“和“祉”的意思是差不多的，”福祉“一起的意思是”福“。”福利“和”福祉“很像。它们的不同是： 福利是生活上的利益，尤其是对职工生活的照顾，比较具体。 比如：我们公司的福利很好，住宿条件好，假期很多，过节的时候还有很多礼物。 你们公司的员工福利待遇好吗？ 福祉是很抽象的幸福和福气，尤其用于人类或者社会。 比如：为了全人类的福祉，我们应该保护环境。 I suppose your Chinese level is relatively high, so I explained in Chinese, if you can‘t understand all, please feel free to ask me, I will try to explain in another way. Hope this can help you.

你好，我又来了。哈哈 Duration of action with verb+object is a very common expression in Chinese. If the action is already done，we have two options，please try to find the rule by yourslef first. 我上了一个小时课。/我上课上了一个小时。 我看了半天书。/我看书看了半天。 我学了一年汉语。/我学汉语学了一年。 Yes，you are right. The first structure is S+V+了+Duration + O. The second structure is repeating the verb，S+V+O+V+了+Duration. Meaning to use the basic structure SVO first then repeat the verb with duration. No matter what，the duration should be always together with V+了. This is the use of daration complement，the key is to get the right order of complement and object. If you want to express the action you are going to do in the future，just remove 了， and add a 要 before verb. I believe this can help you.

Eva is right. 可怕 is used for describing the characteristic of somebody or something to indicate its terrible or fearful. It is an adjective. For example，这个人真可怕。/他是一个很可怕的人。（somebody）这部电影真可怕。/这是一部很可怕的电影。（something）. But if you want to express people's own feeling，the word is 害怕. Eva already explained. In a word，fearsome corresponds to two words in Chinese，可怕和害怕，you need choose according to your meaning and context. Because you know，languages is a kind of imbalance.

THe syllable for 男 is nan2，and for 能 is neng2. The numbers mean the tone. They sound like similar but totally different. You may check the pronunciation from e-dictionary.

It is a very good question. And also a relatively complicated question. About your second sentence，maybe we can do a little correction. 我的手机在柜子上，请帮我把它拿下来。 We can use 它 to substitute 手机，and the verb we had better use 拿，because 手机 is not that heavy，no need to 搬，haha. This sentence is surely right，and 下来 here uesd after a verb means from the upper to lower. The first sentence，学生总是安静不下来。安静 is used as a verb here，下来 indicates one action is finished，loses its original meaning. so 安静下来 means stop the state of noisy and keep silent. If we add a 不between them，means the students can not stop making noise and keep silent all the time. We have many similar expression like this, for example, 车停不下来. The car can not stop. 衣服太紧了，脱不下来. The clothes is too tight that I can not take off it. Last，your sentence 学生总是不安静 is also right，but the tone is not that strong，if you say 学生总是安静不下来，meaning it is very hard even impossible for them to keep silent. Hope this can help you. 希望这个可以帮到你。