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Unit 4 1.be mad at sb. =be angry with sb. 生某人的气 He is mad at me for losing his pen. =He is angry with me for losing his pen. be mad about/ on (doing) sth. 对…着迷 He is mad about going to dance. 2. not…any more=no more 不再（数量；程度） not …any longer=no longer 不再（时间；距离） I can’t play any more. =I can no more play. He doesn’t live here any longer. =He no longer lives here. 3.bring 带来Bring your homework here. take带走Take an umbrella with you. get去拿来 Please get me some water. carry搬运，抬（负重） Can you help me carry the box to the office? 4.message消息，信息 leave a message for sb.给某人留个信 send a message to sb.给某人发信息 give a message to sb.给某人捎个信 take a message for/to sb. 给某人捎个信 get/receive a message from sb.收到某人的信息 5.suppose假定；认为；期望 (1). Let’s suppose we can live on the moon in the future. (2). I suppose you are right. I don’t suppose you are right. Do you suppose he can come? Yes, I suppose so. No, I don’t suppose so./I suppose not. (3).be supposed to do应该做某事；被期待或被要求做某事 Teachers are supposed to treat all the students alike.(老师们应该对学生一视同仁) 6.pass sb, sth.=pass sth. to sb. Pass the pen to me.=Pass me the pen. 只能说Pass it to me. 不能说Pass me it. pass on 传递(不止两个人) Please pass the book on to him. 7.be good at=do well in 擅长 be good to 对…好 be good for对…有益 be weak in 在…方面差 8.hard-working勤奋的 She is hard-working. work hard努力工作 Our teacher works hard. hard work艰苦的工作 Though it is hard work, she doesn’t give up.(放弃) work on 从事于 She is working on a math problem. 9.hope/wish (1) hope to do =wish to do I hope /wish to watch the football game. (2)hope+从句（不用虚拟语气） wish+从句（用虚拟语气） I hope you will pass the exam. I wish I were a bird. (3)wish sb. to do I wish you to go with me. (4)wish +双宾语 I wish you success. (5)hope (名词) 希望 wish (名词) 愿望，祝愿 He never gives up（放弃）hope. Give my best wishes to you. 10.if/whether (1)是否（可以互换） She asked me if/whether she could copy my homework. (2)if(如果) I will stay at home if it rains tomorrow. (3)whether与or not连用;放在介词后;不定式前 I don’t kno