I must ask him to give up smoking
step 2 presentation 第二步 呈現(時間:10分鐘)
1. (聽1a錄音，回答問題。)
t: look at these questions.
(可用幻燈片或小黑板出示。)
(1)is smoking good or bad for his health?
(2)what may smoking cause?
t: please listen to the tape, and find out the answers.
(可放兩遍錄音并核對答案。)
t: now, please read it again. then find out the key words in this dialog.
(板書)(板書時不要與上面的詞重復,要恰當。)
relax, yellow, cough, say, lung
t: ok. please practice 1a in pairs, then act it out according to the key words.
(表演時，可用教科書等工作為道具。)
(教師注意觀察，看學生的口語表達能力如何，擦去關鍵詞之后，還要達到能說為止。請1-2組學生表演。)
2. (再讀1a，請學生找出關鍵句型、短語。)
t: well done! please find out the main points in 1a.
s1: ask sb. to do sth.
s2: give up doing sth.
s3: …
(板書)
ask ab. to do sth.
ask sb. not to do sth.
must do sth.
give up doing sth.
step 3 consolidation 第三步 鞏固(時間:8分鐘)
1. (鞏固詞組，靈活應用。)
t: please make new sentences with ask sb. to do sth./must do sth./give up doing sth. (個別提問即可。)
2. (觀察1b的掛圖，教育學生養成良好的生活習慣。)
t: look at the picture. (畫有小男孩做操的圖片) what’s the boy doing, s1?
s 1: he is doing morning exercises.
t: is it good for his health?
s1: yes.
t: so you must do morning exercises. (可重說)
(再展示扔香蕉皮的圖片。)
t: what’s he doing?
s2: he is throwing litter about.
(throw litter about 前面已訓練過，根據學生掌握情況，不可能有障礙。)
t: is it bad or good?
s2: it’s bad.
t: so you must not throw litter about.
(以同樣的方式展示、回答另四幅圖。)
t: practice these six sentences by yourselves.[來源:z&&]
(說明“must not”句式和“don’t…”句式可以互相替換。)
附：don’t stay up late at night. or: you must not stay up late at night.
don’t read in the sun. or: you must not read in the sun.
…
(教師巡視，幫助指導。)
3. (先師生互動，再學生之間互動完成1c。)
t: ok. next, look at the picture in 1c. discuss with your partner and write some school regulations. (可用漢語提示。)
(句子中有生詞lawn，可適時講解,該詞只需了解，不需掌握。)
for example:
t: you must not climb trees. s1.
s1: don’t climb trees!
t: you must not park. s2.
s2: don’t park!
…
(然后，同學之間操練，結合must, must not/don’t句式)
step 4 practice 第四步 練習(時間:10分鐘)
1. (練習對話，牢記表達生活習慣的句子或短語。)
t: now, i want to ask you some questions, s3, please.
s3: yes?
t: do you often watch tv for a long time?
s3: yes, i do.