I am(was) very young now(then).
She is(was) quite pretty now(then).
He is(was) too fat now(then).
You are(were) very happy now(then).
they are(were) very tall now(then).
Is(was) she at home now(then)?Yes,she is(was)
are(were) you very tired now(then)?no,I was not.
How old are(were) you now(then)?I was thirteen.
Where is(was) the girl now(then)?She is(was) on her way home
相信你看出规律了吧
is...was
am...was
are...were
now...then
Are they on the swings?Yes,they are