unit conjunctions

WHILE : when one event takes place during the continuation of another Example: Philip met his boss when he was having dinner at a restaurant  While he was walking in the park  While she was watching television  While they were waiting for a taxi  While I was tidying the wardrobe  He saw a wild dog  Her mother cooked dinner  It began to rain  I found some old love letters  When my teacher opened the door, we were drawing on the blackboard  When I saw Katherine, she was having a drink at the pub  When the man received the news, he was talking giving a lecture