I am a native English speaker, I am currenly teaching classes as part of my Erasmus year away and seeing as I have never learnt English grammar it is sometimes difficult when a student asks me why or asks about a certain grammar point!! because I just know what sounds wrong or right, but not the reason behind it.
Last week a student asked me about the difference between as and like. I have looked into this and I have taken a handout from this site also to use in class. But I have a couple of sentences I am not sure about....
1. I regard them as friends
2. I gave it to her as a present
3. Considered as a whole, the project is very good
4. I feel like a holiday
5. I'll do it as agreed
Could you help me please by explaining why As and Like is used in each sentence...?
Many thanks, K.
***NOT A TEACHER***
(1) Grammar books, dictionaries, and teachers differ on how to parse (analyze) those little words.
(2) I regard them AS friends.
(a)AS introduces FRIENDS.
(b) FRIENDS refers to THEM.
(c) In that kind of sentence, AS can be described as an introductory word/ expletive/particle/ fossilized conjunction. Its only job is to introduce FRIENDS.
(d) Some people even use the word "preposition" to describe AS. I believe, however, that would NOT be accurate. It IS a preposition in : Tom works as a clerk. In that sentence, "as" = in the role of.
(3) I gave it AS a present. Same analysis.
(4) Considered as a whole, the project is good.
(a) I think (only my opinion) that it is a short way to say: (If/when it is) considered as a whole, the project is good.
(b)AS introduces A WHOLE. A WHOLE refers to "It."
(c) Compare: If you consider it AS a whole, the project ....
(5) I feel like a holiday.
(a) A famous grammarian says that "feel like" = an idiom = to want.
(b) He says this combination is a verb (feel) + a preposition (like).
(c) A very good dictionary agrees that "like" in this combination is a preposition.
(d) I feel like a holiday./I feel like taking a holiday./ I feel like (eating) Chinese food tonight.
(6) I will do it as agreed.
(a) One of my favorite grammar books says this kind of sentence probably = I will do it as (I/we) agreed (to do it). Since AS connects two clauses (sentences), AS would be a (subordinating) conjunction.
If you have any more questions, the great teachers at this website are waiting to help you. They have helped me a lot.