资源看点：谈论年终聚会的规则，运用if引导的条件状语从句。

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If you go to party, you’ll have a great time.
3a.read the following notice from the school principal.Then fill in the blanks to complete the dialogue. Each blank will need more than one word.
End of Year Party
I want you to remember the rules for school parties
   Don’t wear jeans! If you wear jeans, we won’t
   let you in.
   Don’t bring food to the party. If you do, the teachers
   will take it away.
   Don’t bring friends from other schools. If you do,
   the teachers will ask them to leave.
   Don’t leave the gym during the party. If you do,
   the teachers will call your parents.