How to use when

• When is used when the two actions are happening at the same time or during that time, here when has a similar meaning to while; like:

my sister called me, I was coming back home.

Two actions are happening simultaneously.

Use of when in sentences

I was driving my sister was talking to me.

'My sister was talking to me' is happening during ' I was driving.'

• When means after or just after; such as:

I will play with you, you have cooked the meal.

‘I will play with you’ happens after 'you have cooked the meal.'

You called me I stepped into the home.

'When' here means 'just after.'

• When shows a condition and it has a similar meaning to 'whenever, if.' For example:

I call you I have time.