The document defines and provides examples for several common English words: Usually - used to talk about what happens most of the time. Women usually live longer than men. Didn't - the contraction of did not. Ahmed didn't like his sandwich. Heard - the past tense of hear. I heard music coming from upstairs. Sure - certain you know something. Are you sure that's Sarah's cousin? Today - the day that is happening now. Today is my birthday! During - from the beginning to the end of a period of time. During the summer we can swim a lot. Better - comparative of good. My friend's car is much better than mine