Earlier we learned the three major uses of as a preposition, as there are "like ..., such as...", "as...", "such as..." three meanings, in English as also used as a conjunction, there are "because...", "when... The meaning of words such as "time", "according to ...", guides the cause clause in the sentence, the time adverb clause, the way adverb clause, the comparative adverb clause, the concession clause, the definite clause and the accompanying adverb clause, and the use as a conjunction is much more complicated than the use as a preposition. But as long as we make a little careful summary, we can fully grasp it.
1. Lead reason adverb clause: It means "because..., because..." is often placed at the beginning of the sentence.
as i’m busy,i cannot play tennis with you all morning.
Because I'm so busy I can't play tennis with you all morning.
as we are young,we can’t enter the place of entertainment.
As we were too young to enter the entertainment venues.
tired as he was, i decided not to disturb him.
Because he was tired, I decided not to bother him.
2. Lead the temporal adjective clause that means "when... when".
he broke the glass by accident as he brushed the table.
He inadvertently broke the cup while wiping the table.
as we walked through the forest ,we heard some strange sounds.
As we walked through the forest, we heard some strange sounds.
3. Lead the way adverb clauses that mean "in accordance with ...".
the boy can always do his homework as the teacher says.
The boy was always able to do his homework as requested by the teacher.
students must obey the rules as the schools require.
Students must be disciplined in accordance with school requirements.
4. Guide the comparative adverb clause with "as... as" structural expression.
You can do the job as well as she does.
jenny didn’t use to sing so beatifully as her mother did.
In the past, Jenny didn't sing as well as her mother.
5. Lead concession clauses that mean "although..., although...", which has the meaning of a turn.
tired as she was ,she went on doing his homework.
Although tired, she continued to do her homework.
young as he is, he knows a lot more than other children.
Although he was young, he knew a lot more than other children.
6. Lead the definite clause, placed after the noun.
he is such a good girl as everyone likes.
She is a good child that everyone likes.
Mr. li bought the same mobile phoneas i did.
as we expected, he got the first place again .
As we expected, he came in first place again.
7. The bootstrap table is accompanied by an adverbial clause that indicates "with...".
as time passed, he seemed to get worse.
Over time, he seemed to get worse.
as the environment gets better,more and more birds have appeared in our city.
With the improvement of the environment, more and more birds are appearing in our cities.