【正确答案】Teaching Objectives:
   (1)Students correctly transform some verbs that they have learned into v.-ed form through observation and conclusion.
   (2)Students distinguish the usage of the simple past tense from other tenses.
   (3) Students appropriately use the past tense to talk about the activities they joined in the past.
   Teaching Key Points:
   Students master the usage of the simple past tense.
   Teaching Difficult Points:
   Students use the simple past tense in the proper situation.
   Teaching Procedures:
   Step 1 Lead-in
   The teacher asks students the following questions.
   Q1: Do you like weekend?
   Q2: Why do you like weekend?
   Q3: What do you usually do at weekends?
   (Justification: Reviewing the present tense will pave a way for teaching the past tense.)
   Step 2 Presentation
   (1)Present the structure
   The teacher writes the sentence "What do you usually do at weekends?" on the blackboard. Then the teacher asks students "What did you do last weekend?" and helps them answer the question. The teacher writes the answers on the blackboard like this:
   I usually play football at weekends. I played football last weekend.
   I usually go to watch movies at weekends. I went to watch movies last weekend.
   I usually visit my grandparents at weekends. I visited my grandparents last weekend.
   The teacher tells the students that the tense of these sentences on the right side is the past tense. Students will see the structure of the past tense clearly, that is "subject+past tense verb..."
   After that the teacher shows some pictures and asks students to make sentences by using "—What did sb. do last weekend? —Sb. (did)...".
   (2) Focus on the verb's form
   After students understand the structure of the past tense, the teacher asks them to focus on the verbs in each sentence. And then the teacher asks students a question: "The word 'play' becomes 'played', 'go' becomes 'went' and 'visit' becomes 'visited'; why does this happen?"
   After students' discussion, the teacher tells them that "play" and "visit" are regular verbs and "go" is an irregular verb.
   (Justification: The inductive method to present the language point of past tense is very useful. Students can have a better understanding of the structure.)
   Step 3 Practice
   The teacher asks the student to fill in the following blanks.
   What ______ you do last weekend? I ______ soccer. / We ______ to the beach.
   What ______ she do last weekend? She ______ her homework.
   What did he ______ last weekend? He ______ to the movies.
   What ______ they do last weekend? They ______ tennis.
   (Justification: The exercise can check whether the students have mastered the language point of the past tense or not.)
   Step 4 Production
   Task: Sharing your experiences
   The teacher asks students to work in pairs to share one of their unforgettable experiences. Students should supervise each other to use the right tense. When students are doing the task, the teacher will walk around in the classroom to make sure that all the students are earnestly doing the task.
   When students finish the sharing game, they should write down what their partners have told them in right tense.
   (Justification: Through the sharing game, students use the learned knowledge in real life, and develop speaking and writing abilities. The game can also help teacher assess students mastery of the new knowledge.)
   Step 5 Summary and Homework
   Summary: Students conclude what they have learned, and then the teacher gives a further summary.
   Homework: Students help their parents do some housework and talk about what they do next class.
   (Justification: Summary and homework can consolidate what students have learned in this class.)