1. 句型转换

1. （1） I think I'm going to stay at home.（改为否定句）I think I going to stay at home.
3. （2） If you go to the party, you'll have a great time.（改为同义句）If you go to the party, you'll .
5. （3） Ride your bike or you'll be late．（用if改写）You'll be late if you your bike.
7. （4） — they have the party today?(根据答句补全问句）
   —If they have the party today, half the class won't come.
   
9. （5） You mustn't bring food to the school parties.（祈使句）   food to the school parties.