One or two
一张───a sheet;两张───Two
covered up the body with a sheet.───一条布单把尸体盖上了。
She took up a sheet and ratcheted it into the typewriter.───她拿起一张纸，把它哗哗啦啦地塞到打字机中。
Her naked body was found wrapped in a sheet in a field.───在田里发现了她的尸体，全身赤裸，裹在一条床单里。
There is a sheet of stiff cardboard in the drawer.───在那个抽屉里有块硬纸板.
She pulled out a sheet of paper from inside her jacket.───她从上衣里面掏出一张纸.
He was as white as a sheet.───他面无血色。
Take a sheet of filo pastry and brush it with melted butter.───取一张擀得很薄的油酥面皮，上面刷上一层熔化的牛油。
A sheet of frost covers the windshield.───一层霜覆盖了挡风玻璃.
After the heavy frost the road was a sheet of ice.
Are you OK? You're white as a sheet .
She tore a sheet of paper in two.
Take a sheet of paper and draw a line down the middle.
He reached into his pocket and withdrew a sheet of notepaper.