- Half (of) my friends live abroad.
She spends half (of) her time travelling.
Of is not used in expressions of measurement and quantity.
I live half a mile from here. (NOT . . . half of a mile …)
How much is half a bottle of whisky?
(NOT … half of a bottle . . .)
We use half of before pronouns.
‘Did you like the books?’ ‘I’ve only read half of them ‘
Half of us are free on Tuesdays, and the other half on Thursdays.
- I’ve bought some chocolate. You can have half.
(NOT . . . the half.)
You can have the big half.
- I’ve been waiting for one and a half hours. (NOT . . . hour)