We generally use LIKE and AS to make comparisons.
(BY WOODWARD ENGLISH)
LIKEThe structure of the sentence is usually: VERB + LIKE + NOUN / PRONOUN.
- She looks like a supermodel.
- He speaks like a native speaker.
ASThe structure of the sentence is usually: AS + SUBJECT + VERB.
- Nobody sings as she does.
- They went to the party as they were.
- We play football like champions do.
- He started work as a carpenter.
- She used the tapestry as a decoration in her living room.
LIKE vs. ASBe careful, in similar sentences that use LIKE and AS, the meanings of each sentence are very different. For example:
- Like your boss, I must warn you to be careful. (I am not your boss, but he/she and I have similar attitudes.)
- As your boss, I must warn you to be careful. (I am your boss.)
AS IFIn English we also use as if to make comparisons. However it has a few distinct characteristics to its use:
1. The verb after AS IF is always in the past subjunctive, no matter what tense the sentence is.
2. If the verb BE directly follows AS IF, we use were for all personal pronouns.
- He looks as if he knew the answer.
- She walks as if she were a supermodel.
- He boarded the airplane as if he were a seasoned traveller.
- He spends money as if he owned a bank.