To be: Short answers (page 29 to 30)
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Now that we have learned new words, it is time to learn and practice new grammar! 现在我们已经学习了新单词，现在是时候学习和练习新语法了！
| Are you busy? | Yes, | I | am. |
| Is he busy? Is she busy? Is it busy? | Yes, | he she it | is. is. is. |
| Are we busy? Are you busy? Are they busy? | Yes, | we you they | are. are. are. |
Here are some examples of using the new grammar. 以下是一些使用新语法的示例。
Are Fred and Jane busy? 弗雷德和简忙吗？
Yes, they are. They are reading a book. 对，他们是。他们正在读书。
Is she busy? 她忙吗？
Yes, she is. She is feeding her dog. 是的，她是。她正在喂狗。
Is Frank busy? 弗兰克忙吗？
Yes, he is. He is brushing his teeth. 恩，他是。他正在刷牙。
Are they busy? 他们忙吗？
Yes, they are. They are painting the wall. 对，他们是。他们正在粉刷墙壁。
Here is a video you can watch. Listen carefully. 这是您可以观看的视频。仔细听