1.He often goes home on foot. (同义句转换) He often . 2.My sister does housework at the weekend.(否定句) My sisterhousework at the weekend. 3.The girl in red is Tom" sister.(划线部分提问) girl is Tom"s sister? 4.Does Jim help his mother do the housework?(改为陈述句) Jimhis mother do the housework. 5.There is a knife at home.(对划线部分提问) How manythere at home? 6.They are old computers.(改为单数句) old computer.