my parents like to watch to TV
do my parents like to watch to TV?
my english teacher is leaving this school next year
is my english teacher leaving this school next yeat?
(如果说说leaving的话 那就是他已经决定好了明年的某个时间离开.如果是当即决定的话就用will leave.如果是决定好了明天离开 没强调什么时候 可以用going to leave)
he has read this book before.
has he ever read this book before?