1.Perhaps these sentences are in a story, before the first sentence, the writer maybe said someone is OK, but coco's not so well because it feels wet and was cold. "却" is like "but" in Englsh, that's the turning point. E.G., Mary studies good, ((but)) her sister doesn't. Mary读书很好，（（但））她的姐姐却不好。 2.“直”+verb, is an idiom here, that makes a stronger expression. E.G., 可可冷得发抖. Coco trembled with cold. 可可冷得((直))发抖. Coco trembled ((all the time)) with cold. But you can't put "直" before every verb. We don't use it very often. It is safer to just say 冷得发抖. 3.放 usually means the verb "put", here, you can translate it as "lay". "I pick it up, and lay it in my arm". And yes, 取暖 means to warm up oneself. 4."把" is a particle. In Chinese you can use not only sb.+verb+sb.(sth.) but also sb.+把+sb.(sth.)+verb. I pick him up. = 我抱它起来。 =我把它抱起来。

The sentences are exactly the same to your understanding. 1 : In this sentance why do you put 却 before 全? 可可(却)全身湿透, "却" is a decorative word, it is used to dress up the sentence. Similar to Englisn "conjunction: although". It is 全身, these two words have to group them together, it means the whole body. 2. "直" should be two words grouping together "一直", it means continuously. 冷得(直)发抖. You can say 冷得发抖 or 冷得一直发抖. 放在手臂上让它取暖 what does 放 mean? 放 means place onto the position. 4:what does 把 mean in 我赶快把它抱起来? 把 means being, he was being picked up by you. The action that you peform is active, the person being picked up is passive. Here, it is the active and the passive in the same sentence.

1, “ 全身湿透” can't be divided . “却” is similar to "however" ,and "全身湿透" is a phrase 2."直” means "non-stop" IN Chinese we usually put ADV before phrase which is decorated by the ADV 3 把它抱起来，放在手臂上>> since the former and the latter have the similar structure of sentence, you can consider them as a series of activities ,so they share the same SUBJECT "我” 放means "put.. on the surface",you have to "put it on the surface of my arm" before" warm it up",right ? so it's why 放在手臂上 让它取暖 ，otherwise the sentence is incomplete.

1.“却”is just opposite what he has thought. 2.“直”is just as “一直”，means "always",has not stopped. 3."抱起来放"“拿起来放”，放的后面一般跟着就是物体“静止”了，表示状态“平静”了 4.把，有点“助动词”auxiliary的意思，你也可以写成“抱它起来”