Lesson 31
Step 1 Revision
1 Check the homework exercises.
3 Get the Ss to retell the story in Lesson 30. Use the questions in Wb Lesson 30， Ex. 2 to guide them.
Step 2 Presentation
Ask the Ss what kinds of food do you know in English？ Collect their answers on the Bb： eggs， beef， milk， etc. Talk about some kinds of food. Ask Where do eggs come from？ Help the Ss to answer chickens.
Ask about beef， pork and milk in the same way. Teach mutton. Say Mutton comes from sheep.
Write where do eggs come from？ on the Bb.
Then present： What do you get from chicken？ See if the Ss can answer. Repeat， asking about pigs， sheep and cows.
Write what do you get from chickens？ on the Bb.
Step 3 Practice
SB page 31， Part 1. Ask the first one as an example， then let the Ss ask and answer in pairs. Check the answers with the whole class，
Step 4 Ask and answer
SB page 31， Part 2， Read through the dialogue with the Ss and make sure they know the meaning of the different responses. Note that twice = two times. Then get the Ss to ask and answer in pairs.
Make up some new questions， like this：
Have you ever travelled on a train？ Have you ever cooked a meal？ etc.
See if the Ss can make up some questions.
Step 5 Revision
1 Revise yet and already by asking a student to perform a task （e. g. clean the Bb）。 Before he/she performs the task， ask Has he/she cleaned the blackboard yet？ Help the Ss answer No， not yet. When the task is completed， repeat the question. Help the Ss to reply yes， he/she has cleaned it already. Repeat with other tasks.
2 SB page 31， Part 3. Speech Cassette Lesson 31. Play the tape for the Ss to listen and repeat， then let them practise the dialogues in pairs. Get some pairs to act out the dialogues.
Note： The Present Perfect Tense suggests an action is completed up to the present. Have you milked thecows yet？ Yes， we've done that already. Now here's the milk. Adverbs relating to past time， e. g. ago， yesterday， etc. cannot be used with the Present Perfect Tense. When we talk about when the action took place， we must use the Past Tense with adverbs relating to past time， e. g. When did you do that？ We did it an hour ago.
Step 6 Workbook
Wb Lesson 31， Ex. 1－3. Ss do Ex. 1 orally in pairs. For Ex. 2， do the first two or three sentences as an example， then let the Ss work alone. Check the answers with the whole class. The answers are： arrived， borrowed， returned， gave， said， took， had， asked， didn't return， came， said， died， gave.
For Ex. 3， the Ss should try to tell the main idea of the story in their own words. The questions in Wb Lesson 30， Ex. 2 and Wb Lesson 31， Ex. 2 can be used as a guide. First get them to work in pairs， then call out individuals to do it in class.
Step 7 Acting
Let the Ss practise the play in Lesson 30 for a few moments. Then get two Ss to act it out. See if they can do it without books！ It doesn't matter it they change the words a little.
Homework
Revise the new words and the Present Perfect Tense for a test tomorrow.
Do Ex. 3 in the exercise book.
Ask the Ss to do Ex. 2.
