English: assign

could you understand these 10 sentences containing 'assign'?

1. this case is assign to Ranran.
2. Ranran assigned Chaochao a task.
3. Ranran assign Chaochao to work hard.
4. Ranran was assigned to the office in Beijing.
5. Ranran was assigned to her favorite department.
6. Chaochao was assigned $10 million by Ranran.
7. Internet Service Provider assign IP addresses to every user.
8. Assign basic rights to every person.
9. Ranran assigned a whole week for the vacation.
10. The boss assign the reason for the fail to lack of resources.

note:
1. basic sentence structure:  
                (n.)sb/sth + (verb.) assign/assigned + (prep.) to/for + (n.)sb.sth, some parts may be absent in particular sentence.
2. word by word: 
                 understanding a sentence word by word is  a flexible way
3. totally relying on phrase is hard: 
                phrase is more fixed than single word, it is hard to remember every phrase of a word, and your mind stream may be cutted when try to use it

Reference:

https://dictionary.cambridge.org/zht/%E8%A9%9E%E5%85%B8/%E8%8B%B1%E8%AA%9E/assign