1 . 判断下列句子的类型并理解be动词的用法(连系动词/助动词)
1. The boy is asleep.________ 式________
2. The boy is sleeping.________ 式________
3. The boy is playing the guitar.________ 式________
4. He is playing happily.________ 式________
5. His music is very beautiful.________ 式________
1. The boy is asleep.
2. The boy is sleeping.
3. The boy is playing the guitar.
4. He is playing happily.
5. His music is very beautiful.
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