I must ask him to give up smoking

 t: open your books and check the answers by yourselves.
step 4 practice 第四步  練習(時間:12鐘)
1. (展示食物圖片，加強單詞記憶。)
t: look at these pictures in 2 again. divide the foods into different kinds. (可用漢語重復一遍。)
(呈現多媒體課件)
meat 
vegetables 
fruit 
2. (根據生活常識，判斷剛學的食品哪些是健康食品，哪些是不健康食品。)
t: now can you tell me which are healthy food and which are unhealthy food. please complete the chart below.
(可再次掛出食品圖。)
healthy food 
unhealthy food 
3. (請學生討論日常生活中的食品與健康，深化及擴大課堂教學。)
t: what else do you eat every day? what do you think are healthy food?
  what do you think are unhealthy food? please discuss in groups.
(教師巡視指點，幾分鐘后，請學生匯報討論結果。)
附：
s1: i think fish is healthy food.
s2: dumplings is healthy food.
s3: hot dogs are unhealthy food.
…
(對回答得好的學生及時給予表揚。)
4. (聽2錄音，讓學生完成練習，核對答案。)
5. (完成2。)
  t: discuss whether alex has healthy food or not, then write a passage about food and health. you may begin like this: we should eat more fruit like apples, oranges and strawberries…
  (可給予適當指導，幾分鐘后，教師要求幾名學生到講臺前讀他們所寫的短文，看誰寫得好。)
6. (四人一組，進行自主學習，每人負責歸納整理一個section的重點句型與詞組，最后四人將結果并在一起，向全班匯報。匯報完后，教師將學生的結果與3a、3b進行對照，然后放3a，3b錄音，讓學生跟讀。)
step 5 project 第五步  綜合探究活動(時間:5分鐘)
1. (完成4，深化本課內容。)
  t: please do 4 by yourself, then give a report to our class!
  (自己根據選項對自己進行評價，教師可適當解釋。)
2. homew ork：
  (請同學們寫出怎么養成好的生活習慣，做一個有良好習慣的人。用句型：we should…/we shouldn’t/we must…/we must not…盡可能多的組織句子。)
  for example:
  we should get up early every day.
  we shouldn’t eat candies often.
  we must sleep for 9 hours every night.
we mustn’t watch tv for more than three hours every day.
板書設計：
i must ask him to give up smoking.
section d
what’s up?   you must…/you mustn’t…
on the lawn   you should…/you shouldn’t…
keep healthy  good health is more important than wealth.
    we must have enough food to keep hea lthy.
    it’s necessary for us to have healthy eating habits.