重点讲解：
1. be tempted to do sth. 想做…的；希望做的；
例句：I'm very tempted to sell my house.
我很想把我的房子卖掉。
2. invite sb. to do sth./sb. be invited to do sth. 邀请；
例句：She invited him to her 26th birthday party in New Jersey.
她邀请他去参加她在新泽西举行的 26 岁生日聚会。
3. be serious about 认真的；当真的；真心的；郑重其事的；
例句：He was serious about the matter.
他对于那件事很认真。
4. had better do sth. （用于建议、警告、威胁、发表意见等）最好；
例句：He had better cut out the nonsense.
他最好停止胡说八道
