He finished his homework yesterday afternoon (改为否定句)
He finished his homework yesterday afternoon (改为否定句)
He was doing his homework yesterday afternoon 改为否定陈述句
He had finished his homework already.(改为否定句)
Jim has already finished his homework.(改为否定句)
Tom finished his homework yesterday改为否定句和特殊疑问句
He was doing his homework yesterday afternoon改为否定陈述句急
He did his homework at home yesterday.(改为否定句)
He has already finished his homework 否定句
LI Hong did her homework yesterday afternoon(改为否定句)
he was doing his homework yesterday afernoon改为否定
Li Ming has already finished his homework.(改为否定句)
He has finished doing his homework.(变为否定句)急!