Everyone arrived late for the party for a variety of reasons.

　　4.They all charge money for admission, and for the rides and shows in the park.

　　charge v. to ask money in payment收费, 要价; to record(sth.) to one's debt 把......计入某人账内; to bring a charge against 控告, 指控; put a charge into (sth.) 给（某物）充电

　　 The hotel charged me $30 for a room for the night.

　　How much do you charge for the mushroom?

　　The railway charges half-price for university students.

　　Don't forget to charge the money of the shoes to my account.

　　He was charged with stealing the jewels.

　　Have you charged the battery?

　　【拓展归纳】

take charge of 掌管, 负责

in charge of 主管, 看管

in/under the charge of 在......的掌管之下

free of charge 免费的 　　 She took charge of the family business when her father died.

　　This factory is in the charge of Mr.Green.

　　Mary is charge of the baby.

　　The drinking water there is free of charge.

　　5.Theme parks have a certain idea-a certain theme that the whole park is based on.

　　base sth.on/upon...以......为基础/根据

　　 One should always base one's opinions on facts.

　　The news report is based entirely on fact.

　　The film is based on a novel by D.H.Lawrence.

　　6.Its purpose is to involve visitors in physical exercise and athletic competition.

　　involve v. to become connected or concerned 使参与, 使卷入, 牵涉, 拖累; to have as a part or result包括, 含有, 必有......结果

　　 Don't involve other people in your trouble.

　　All the children were involved in the school play.

I got involved in the quarrel between Joan and Mary.