Key notes:
　　1.Party: n. a group of people 一伙人，特别是指统一行为的群体
e.g. a search party ( 搜救队)
The president was followed by a small party of journalists. (总统被一伙记者追问着)
Thomas, party of six, your table is ready. (托马斯，您的六人餐桌已经准备好了)
　　2.Guarantee: v. promise, make something certain , 保证，确保 一般直接界宾语或”that”引导的宾语从句，也可用作guarantee sb sth.
e.g. She guarantees that she will make there on time. (她答应准时到那儿)
Even if you finish your training, I can’t guarantee you a job. (即使你完成培训，我也很难保证你得到一份工作。)
A good education doesn’t guarantee a good job. (好的教育不一定确保找到好工作)
　　3． assure: to tell sb sth will certainly happen or be true, 使….相信， 一般跟that 引导的从句，或用作 assure sb of sth, 可以用作被动语态
e.g. Her doctor assured us that she would be fine. ( 她的医生告诉我们她一定会好起来)
His confidence assures us of his future success. ( 他的自信让我们有理由相信他日后定能成功)
*要和ensure 的用法加以区分，ensure 除可接that引导得从句外，还可直接名词语，意思与guarantee 相近。
e.g. Effective measures must be taken to ensure the success of this Olympic Games. ( 必须采取有效措施确保本届奥运的成功举办)、
The new policy will ensure that more people enjoy medicare.
(新的政策将确保更多的人享受医疗保险)