A. FLOW - FLOWED - FLOWED
1. move along smoothly
Rivers flow into the sea.
Tears flowed from her eyes.
Prosperity flows out from the country.2. hang down loosely (usually of hair or clothes)
Her shiny hair was flowing down her back.3. be the result of
Progress flows from hard work.
B. FLY - FLEW - FLOWN
1. move through the air as a bird does
We're flying to London tomorrow morning.
Birds shouldn't live in a cage. They should fly free in the sky.2. move quickly, rush along
The door flew open.
Mary flew down the stairs to meet her friends.
C. IDIOMS WITH FLY
1. fly high = be ambitious
He's been flying high ever since he graduated from university.2. The bird has flown = the person wanted has left or escaped
It's no use looking for the thief any more. The bird has flown.3. as the crow flies = in a straight line
It's only 10 miles from here as the crow flies.4. go fly a kite = used to tell someone who is annoying you to go away
I've had enough of this conversation. Go fly a kite!5. the feathers fly = cause fighting / an argument
The feathers will fly when your father finds out that you've been playing truant again!6. when pigs fly = used to say that something will never happen.
A- I've lent John some money but he promised to pay me back soon.
B- Sure! When pigs fly!