一支粉笔a piece of chalk两张纸 two pieces of paper或是 two sheets of paper 三则新闻 three pieces of news 十位男医生ten men - doctors 五位女老师 five women-teachers两块面包 two pieces of bread100个学生 one hundred students 4袋大米 four bags of rice数百个鸡蛋 hundreds of eggs
a piece of chalktwo pieces of paperthree pieces of newsten men doctorsfive women teacherstwo loaves of breadone hundred studentsfour bags of ricehundreds of eggs
