as…… In the middle of as is the usage of noun, adjective and adverb,

as…… In the middle of as is the usage of noun, adjective and adverb,

1. Usage of as... As
As... As means "and The basic structure is as + adj. / adv. + as
(1) This film is as interesting as that one
(2) Your pen writes as smoothly as mine
The negative expression is not as / so + adj. / adv. + as
This dictionary is not as / so useful as you think
If there are modifying ingredients, such as twist, three times, half, a quarter, etc., they should be placed before the first as
Your bag is twice as expensive as mine
Some common sentence patterns about as... As:
(1)as...as possible
Please answer my question as soon as possible
(2)as...as usual/before
She looks as pretty as before
(3) As long as
It took us as long as three years to carry out the plan
(4)as far as
He walked as far as the railway station yesterday evening
(5)as well as
She cooks as well as her mother does
Some common phrases with as... As structure are summarized as follows:
As busy as a bee
As easy as ABC
As deep as a well
As light as a feather
As soft as butter
As rich as a Jew
2. As is used as a conjunction to lead the adverbial clause of time
As, when and while are subordinate conjunctions of adverbial clauses leading to time, meaning "when But they are different: when used, the action of the clause can occur at the same time as the action of the main clause, or it can occur before the action of the main clause; when used, the action of the clause is a process, and the action of the main clause and the action of the clause occur at the same time or in the process of the action of the clause; when used, the action of the main clause and the action of the clause occur at the same time, which has the meaning of continuity
(1) It was snowing when he arrived at the construction site
(2) He was watching TV while his mother was cooking
(3) You will grow wiser as you grow older
3. As is used as a conjunction to guide the adverbial clause of cause
As, because and since can be used to express causation. They are connected with adverbial clauses of cause, which means "because, because". But there are differences between them: because means the strongest mood; as is usually placed at the beginning of the sentence, which is weak and colloquial; since is often used in written language, which means the reason known to the other party or known by a little analysis, sometimes translated as "since"
(1) He will succeed because he is in earnest
(2) Since you are so sure of it he "ll believe you
(3) As rain has fallen, the air is cooler