而即便是有症状出现，由于肝脏涉及的功能较多，所以症状也不够典型，很容易被患者忽视殊不知，当以下几个症状找上自己时，恰恰就可能是肝脏已经生病的信号：1、巩膜和皮肤异常黄染所谓巩膜，就是我们眼睛的眼白部分，在正常情况下，它应该是乳白色状态而当肝脏出现严重疾病之后，肝脏本身对胆红素(由身体衰老红细胞产生的有毒代谢物)的代谢能力就会降低在肝脏发生癌变后，癌肿还可能会压迫肝内胆管，导致肝脏无法正常排出胆汁；一旦胆红素代谢异常、胆汁排出障碍，就会导致大量胆红素在血液中堆积胆红素开始随着血液游走、在巩膜、皮肤处沉积，最终就形成了黄染，也就是临床所说的“黄疸”症状根据临床掌握的资料来看，病毒性肝炎、肝硬化、肝癌都可导致黄疸出现

3Act the dialogueCAsk and answer1T:When’s your birthdayT: What would you like as a birthday presentOpen the books at P25Ask and answer in pairs2Do a survey全班进行汇总反馈A: __’s birthday is on … He would like……DListen and write1Books opened at P26Look at the picture , pleaseT: Ben’s birthday’s comingHe is talking to his family about his birthdayparty

c学生再次听录音，鼓励学生说出指令内容，同时请几个学生上台前表演动作(3)游戏：耳语把学生分为5—6组，教师向每组的第一名学生耳语一个指令，如：Tall,tall,tallMake yourself tall这名学生依次向组里的第二名学生耳语这个指令以此类推，直至最后一个学生最后这名学生快步跑道讲台根据指令做动作，谁又快又正确就为他们组赢一分然后，每组的第一名学生站到队尾4 课堂评价 (Assessment)做活动手册本单元36页的练习，方法和步骤同以前5 扩展性活动(Add-activities)让学生说说有关动物类的单词，如：panda, kangaroo, duck, cat, dog, giraffe, elephant, monkey, mouse, rabbit, tiger

(Buildings, cards and people)⑶What food did he want to try(American food)5Complete activity 2 in SB(Get the students to ask and answer in pairs)6Practise to pronounce 'wh' 'wr'7Learn the song: It’s a big exciting world8Complete exercise 1 in ABHomework:Practise the following sentences in pairs:Where are you from