3. He has finished his work.

　　 He 　　 finished his work.

2. You must clean your room now.

　　 You 　　 　　 　　 clean your room now.

陈述句是用来陈述或说明某一事实或某种观点的句子，包括肯定句和否定句两种。

[练习导航]

将下列句子改为否定句，每空一词。

1. Tom and John are in the classroom.

　　 Tom and John 　　 in the classroom.

　　　　　 　　　 Ⅱ. 1. the other 2. other 　　　　　　　 　　　3. The others

　　　　　 　　　 Ⅱ. 1. both 　　　 2. none 　　　　　　　 　　　3. All

　　　　 (四)Ⅰ. 1-3 CCA　　　　　　　　　

3. I have very little time for reading.

　　　　 (三)Ⅰ. 1-2 BA　　　　　　　　　　

2. Few people live to be 100 years old.

　　　　　 　　 Ⅱ. 1. any 　　　　 2. any 　　　　　 　　　　　3. some

　　　　 (二)Ⅰ. 1-4 CCAD　　　　

　　　　　 　　 Ⅱ. 1. We’re going to be away for a few days.

　　　　 Ⅱ. 1-3 AAB

　　　　 Ⅱ. 1. The weather in Moscow is colder than that in Beijing.

2. Look! What’s that in the sky?