while
Translation
during the time that, whereas, a period of time
Examples
I read a book while I waited.
I read a book while I waited.
He is rich, while his brother is poor.
He is rich, while his brother is poor.
Let's rest for a while.
Let's rest for a while.
Grammar Patterns
while + [clause] during the time that... I read a book while I waited.
while + [clause] in contrast with the fact that... He is rich, while his brother is poor.
for a while for a short period of time Let's rest for a while.
Similar Words
Synonyms: during, whereas; Noun: moment, time
Etymology
From Old English 'hwīl', meaning 'a space of time'.
Memory Tips
Think of two things happening at the same time, or two contrasting ideas side-by-side.