GRAMMAR FOCUS
In all the sentences above each has a main clause and an adverbial clause of time, having one of the following as conjunction: when, while, until, whenever, before, as soon as, after.
In sentence 1, ‘when’ is used to talk about two events that happen at the same time, sometimes if one causes the other.
e.g. When you press the button, the door opens automatically.
In sentence 2, ‘while’ is used to show two longer actions that go on at the same time.
e.g. While I was reading my lesson, all others at home were watching TV.
In sentence 3, ‘until’ is used to say how far away a future event is.
e.g. I was reading the newspaper in the library until my friend joined me.
In sentence 4, ‘whenever’ is used to denote the action repeatedly occurring.
e.g. Whenever my friend called me over phone, I was not able to be at home to receive it.
In sentence 5, ‘before’ is used when the action in the main clause continues until the time represented in the adverbial clause.
e.g. My friend used to live with me before he got a transfer to Madurai.
In sentence 6, ‘after’ is used to denote two separate actions taking place one after the other.
e.g. After you switch on the computer, press ENTER key.
In sentence 7, ‘as soon as’ is used to mean ‘immediately after’.
e.g. As soon as I turned the ignition key, the engine started.
In all the sentences above each has a main clause and an adverbial clause of time, having one of the following as conjunction: when, while, until, whenever, before, as soon as, after.
In sentence 1, ‘when’ is used to talk about two events that happen at the same time, sometimes if one causes the other.
e.g. When you press the button, the door opens automatically.
In sentence 2, ‘while’ is used to show two longer actions that go on at the same time.
e.g. While I was reading my lesson, all others at home were watching TV.
In sentence 3, ‘until’ is used to say how far away a future event is.
e.g. I was reading the newspaper in the library until my friend joined me.
In sentence 4, ‘whenever’ is used to denote the action repeatedly occurring.
e.g. Whenever my friend called me over phone, I was not able to be at home to receive it.
In sentence 5, ‘before’ is used when the action in the main clause continues until the time represented in the adverbial clause.
e.g. My friend used to live with me before he got a transfer to Madurai.
In sentence 6, ‘after’ is used to denote two separate actions taking place one after the other.
e.g. After you switch on the computer, press ENTER key.
In sentence 7, ‘as soon as’ is used to mean ‘immediately after’.
e.g. As soon as I turned the ignition key, the engine started.
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