1. Prepositions
Prepositions tell you how things are related to one another – their position.
Where: where one thing is in relation to another thing in the sentence. (e.g. under over at on in through into)
e.g. I put the book on the table.
She stashed her money under her bed.
He drove through the tunnel to the camp.
When: when things happen in relation to each other
(e.g. while during until since in before after)
e.g. I fell asleep during the cricket.
We study maths until lunchtime.
I ate my breakfast before going to school.