weak [əz] , strong [æz]grammar word summary: As can be: ■ a conjunction: As I was leaving, the phone rang. ■ a preposition: He works as a waiter. ■ an adverb: I'm as fast as you.1) used in comparisons used for comparing one person, thing, or situation with anotherSimon isn't as tall as his brother.[/ex]I don't play football as much as I used to.[/ex]There were twice as many visitors as last weekend.[/ex]We need to collect as much information as possible.[/ex]Barbara's hair looks exactly the same as mine.[/ex]We all need exercise, but a healthy diet is just as (= equally) important.[/ex]See:less2) used for referring to what is known used for referring to something that has already been talked aboutAs you know, Jack is leaving next month.[/ex]3) in a particular way happening or done in a particular wayLeave everything just as you found it.[/ex]I invested the money as you suggested.[/ex]Judith was late, as usual.[/ex]4) saying what sb/sth is used when you are saying what someone or something is or doesAs a parent, you naturally want the best for your children.[/ex]a portrait of the princess as a child[/ex]An electric drill can also be used as a screwdriver.[/ex]5) saying how sb/sth is considered considered or described in a particular wayVan Dyck was regarded as the greatest painter of his time.[/ex]Madeira is described as having the best climate in the world.[/ex]6) when or while happening at the same time as something elseAs we were sitting down to dinner, the phone rang.[/ex]We got to the check-in desk just as they were about to close.[/ex]I'm ready to go out as soon as it stops raining.[/ex]7) because used for giving a reason for somethingAs it was getting late, we decided to go home.[/ex]•as for — used for introducing a subject that is related to what you have just been talking about[/ex]As for me, I went home and left them to get on with it.[/ex]as if; as though — 1) in such a way that something seems to be true[/ex]It looks as if it's going to rain.[/ex]Jack smiled as though he knew the answer.[/ex]
— 2) used when you imagine an explanation for something that you know is not the real oneMy car looked as if an elephant had sat on it.[/ex]as it is — already[/ex]I've got enough problems as it is.[/ex]as to — formal concerning[/ex]There is some doubt as to his true identity.[/ex]See:yet
Dictionary for writing and speaking English. 2014.