as (= when / because)

as (= when / because) means “as can mean 'at the same time as' (like when) or 'because' (reason)”. As joins two clauses and has two common meanings. Formation: As + subject + verb, main clause

as can mean 'at the same time as' (like when) or 'because' (reason)

A2

Formation

As + subject + verb, main clause

Explanation

As joins two clauses and has two common meanings. It can mean 'while / at the same moment', often for two actions happening together: As I opened the door, the cat ran out. It can also mean 'because', giving a reason: As it was raining, we stayed in. The listener usually tells them apart from the situation. When the meaning might be unclear, speakers often prefer when or because instead.

Examples

As I was leaving, the phone rang.
As it was late, we went home.

Note

As also has other uses, such as 'in the role of' (I work as a nurse) — a different meaning from the two above.

FAQ

as (= when / because) — what does it mean and how is it used?

as can mean 'at the same time as' (like when) or 'because' (reason). As joins two clauses and has two common meanings. It can mean 'while / at the same moment', often for two actions happening together: As I opened the door, the cat ran out. It can also mean 'because', giving a reason: As it was raining, we stayed in. The listener usually tells them apart from the situation. When the meaning might be unclear, speakers often prefer when or because instead.

as (= when / because) — how do you form it?

As + subject + verb, main clause

as (= when / because) — any usage notes?

As also has other uses, such as 'in the role of' (I work as a nurse) — a different meaning from the two above.

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