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《Unit 4 Growing up Grammar_ Using before, after, when and while & Using since, till and until ＆ Using as soon as and whenever 》公开课优秀教案教学设计（九年级上册）
难 点 master the structure: It’s the first time we have played basketball since this Monday.
The best moment in his career was in 2004—he scored 41 points in a game against …
2.To use the conjunctions to make sentences or conversations. 教学
准备 PPT 板书
设计 Unit4 Grammer
1. He remained there for about a year before the NBA took notice of him.(P51)
2. After he graduated, he was forced to play in another basketball league.(P51)
3. When he finally got the chance, he scored 20 points in his first game.(P50)
4. While (he was) attending junior high, Spud tried out for the school team.(P50)
互助过程 思考研讨 Step 1 Revision and lead-in
1. He remained there for about a year before the NBA took notice of him.(P51)
2. After he graduated, he was forced to play in another basketball league.(P51)
3. When he finally got the chance, he scored 20 points in his first game.(P50)
4. While (he was) attending junior high, Spud tried out for the school team.(P50)
Let the students read the sentences and translate them into Chinese and tell them they are time clauses..The conjunctions are :when,while,since ,until and as soon as.,after, whenever
Encourage the students to say out the others .For example,before,,till,.
Step 2 Presentation
1.Choose some students to read the sentences in the book and tell them the difference.
When 引导的时间状语从句中可使用短暂性动词和延续性动词。
While 引导的时间状语从句中只可以使用延续性动词。
Let the students finish the exercises on page 54 and check the answers.
3. Explanations: since 引导的时间状语从句中通常使用一般过去时，而主句一般使用现在完成时。
till不能用于句首也不能用于not、、until中的until.
4. Let the students finish the exercises on page 55 .
5. Help the students understand the meanings of ‘as soon as’and’whenever’.,then let the students finish the exercises on page 56.C1&C2