It's embarrassing to ask a friend for money.
He asks me a math question. = He asks a math question of me.
Can I ask a favor of you? = Can I ask you to do me a favor?
I can't imagine living in a town without any shopping mall.
I can not imagine that there were fish in the water before.
Students are sitting quietly on their seats.
Those workers have to start working at six in the morning.
The body of a zebra is marked with black and whitish stripes.