There is a nest in that tree. (contraction for there is)
there's
She had started to run when the rain began. (contraction for she had)
she'd
There is a fox in the clouds. (contraction for there is)
there's
He would like to see a snow angel. (contraction for he would)
he'd
He had played in the snow all afternoon. (contraction for he had)
he'd
She could not get home before it started to rain. (contraction for could not)
couldn't
We can not see the stars tonight. (contraction for can not)
can't
We could not see the top of the mountain. (contraction for could not)
couldn't