Grammar for EFC Book6: As if, before, when, after, and as soon as (Ch10 Unit 2 Peter Writes His Letter)

As if and adverb clauses of time with before, when, after, as soon as

As if, before, when, after, and as soon as are subordinating conjunctions. They join two sentences to become one sentence. Different conjunctions show different relations of the sentences combined. 

Subordinating conjunctions can be written in two ways: 

S1 + subordinating conjunction + S2.

OR Subordinating conjunction + S2 + ,+ S1.

Examples and Meanings

Examples

1. It looks as if it is going to rain.     
2. He swam as if he were a fish.                                                    
3. Before we started class, I had had breakfast already.
4. After we finish our class, I will teach 12th graders.
5. When I was in school, I met many good people. 
6. We left the building as soon as he saw the smoke.

Meaning

1. seem like
2. seem like
3. before and after
4. before and after
5. at the same time
6. soon after

Explanation in Khmer in the video lesson below: