拿这个陈述句举例来说：(there is ) There is going to be a match next month.否定句:There is not going to be a match next month.疑问句：Is there going to be a match next month?肯定回答：Yes,there is.否定回答：No,there isn't.拿这个陈述句举例来说：(there are ) There are some boats in the river.否定句：There are not any boats in the river.疑问句：Are there any boats in the river?肯定回答：Yes,there are.否定回答：No,there aren't.