Unit 3 Computers

sample writing:
hello everybody, my name is liu yan.i am a 321 model android.i work for the li family. mr and mrs li work very hard too.mr li is an architect and designs great tall apartment blocks.mrs li is a doctor and has to look after many patients.i remember all the plans for mr li's projects and can tell mrs li which drugs are the best to give any particular patient. and i also look after their library. i store all the books that they borrow from their school or friends in my brain.of course my brain is as large as a mountain, so work like that is no trouble to me.i really eat books just like people eat food.
the lis have a child who is very spoiled. he needs me to remember all his school textbooks so that i can do his homework for him.he just gives me the information on the subject, what has to be done and the page numbers and i get on with it while he enjoys himself with his friends.sometimes i don't think it is right to do his homework for him — it's somewhat cheating. however, his parents are very concerned at the pressure of work in school these days.the child has too much homework to do. they like him to go to the key school but they also want him to be able to have hobbies, learn to swim and keep fit! poor child! 
so they consider me the most important person in the family after themselves.i am always introduced to their friends and play with visiting children.i am the perfect family academic aid and, although i was not cheap to buy, mr li says i was worth every yuan!
step6 assessment
get the students to assess their writing ability according to the following the questions:
1. is your composition well developed?
2. are your ideas well organized to the point?
3. do you have a good choice of words and idioms in your writing?
4. do you get a good mastery of complex structures of language?
5. what kind of mistakes have you made in your writing?
step5: homework
write about your discussion. you may begin like this:
hello, everyone. my name is ___. i’m 321 model android. i work for the li family….