1.Sam ususlly plays football with his classmates after school.　(劃線提問)
    2.The girl is going to sweep the floor. (劃線提問)
    3.I’m going to paint my bookcase. (一般疑問句)
    4.The boy is looking out of the window. (劃線提問)
    5.Stop talking. (否定句)
    6.This flower is lovely. (變復(fù)數(shù)句子)
    7.The teacher is going to speak to the students tomorrow.　(劃線提問)
    8.Jenny is going to put the table in the middle of the room.　(劃線提問)
    答案：
    1.Sam usuaslly plays football with his classmates after school.　(劃線提問)
    What does Sam usually do after school?　(劃線提問)
    2.The girl is going to sweep the floor. (劃線提問)
    What is the girl going to do?
    3.I’m going to paint my bookcase. (一般疑問句)
    Are you going to paint your bookcase?
    4.The boy is looking out of the window. (劃線提問)
    What is the boy doing?
    5.Stop talking. (否定句)
    Don’t stop talking.
    6.This flower is lovely. (變復(fù)數(shù)句子)
    These flowers are lovely.
    7.The teacher is going to speak to the students tomorrow.　(劃線提問)
    When is the teacher going to speak to the students?
    8.Jenny is going to put the table in the middle of the room.　(劃線提問)
    Where is Jenny going to put the table?