Bend your knees when lifting heavy objects.
She bent down to pick up the pen.
Now, bend forwards/over and touch your toes!
My friend was bending over the table laughing hysterically. (First Certificate in English; B2; Swedish)
The trees were bending in the wind.
I saw fir trees bending in half and 500-year-old oaks shedding their leaves. (First Certificate in English; B2; Polish)
They bent over backwards to make us feel at home.
They won't bend over backwards to look for a quick solution, but sooner or latter the matter will be solved. (Certificate in Advanced English; C1; Spanish)
There's a bend in the pipe so you can't see from one end to the other.
There's a sharp bend in the road.
The other car disappeared around a sharp bend and when we came [a]round it, we saw that the car had stopped in the middle of the road. (First Certificate in English; B2; Italian)