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Step 1: Be动词的独立性与非独立性
（1）be动词的独立性主要体现在基本的意义：是和在的意义。
这个时候be有对立的意义并且充当独立的成分。
（2）be动词往往是充当系动词的成分，构成主系表结构！
Step2：Be动词具有非独立性，主要体现在时态与语态上，或者特殊的句型上。
例如：be+doing的进行时态上；be+done的被动语态上；或者There be句型上。
Make a dialogue.
A: What is/are …doing? B: … is/are …
A: What can …do? B: … can …
Activity 3 Practice
Step 1: Show some pictures to make a dialogue.
A: Who is he? ﹨ Who are they B: … is/are …
A: What is his﹨her job B: He﹨she is-----
A: What is he doing B; he is ------
A: When I saw him, what was he doing? B: He was------
A: What’s in the tree? B: There are many birds in the tree.
Step2 Show time
Let some students to say some things about “be”. And give us some examples.
Activity4 Learning outcome
一、用be动词填空
1. My sister a doctor.
2. My parents teachers.
3. your father a home yesterday?
4. There many boys in the playground just now.
6. The pair of shoes very cheap.
二、时态训练
1. A: Where is your father?
B: He (cook) in the kitchen.
2. A: Did you see the girl in red pass by?
B: Oh, sorry. I (read) newspapers.