1 . Complete the sentences using the correct form of the verbs :
A SCARY DAY AT SCHOOL
The sun ( shine ) when I ( leave ) the house . Black clouds ( come ) when I ( look ) at the sky . My teacher ( stand ) at the gate when I ( arrive ) at school . We ( have ) an English class when we ( hear ) a loud noise . I ( look ) out of the window when I ( see ) a big tree fall down . We ( eat ) lunch when the wind and the storm suddenly ( stop ) .
2 . When we use When and when we use While ?
1 .
A SCARY DAY AT SCHOOL
The sun shine ( shine ) when I left ( leave ) the house . Black clouds come ( come ) when I looked ( look ) at the sky . My teacher stand ( stand ) at the gate when I arrived ( arrive ) at school . We have ( have ) an English class when we heard ( hear ) a loud noise . I look ( look ) out of the window when I saw ( see ) a big tree fall down . We eat ( eat ) lunch when the wind and the storm suddenly stopped ( stop ) .
2.
+) When + clause relates an activity that occurs at the same time as or slightly before the activity in the main clause. The clause following when may express (1) a short interruption, or (2) a response to the activity in the first clause. " X occurs, Y results." Typically, the verb in the when-clause is non-progressive and expresses an activity with shorter duration.
+) While + clause relates an activity that occurs at the same-time as (simultaneously with) the activity in the main clause. The clause following while includes a verb with a meaning and/or a tense that expresses duration. The while-clause often expresses a background activity to the focus-activity in the main clause.