【正文】
數(shù)不變)bread, rice, water ,juice等。a book, Yes, there is./ No, there isn’t.Arethere…? a piano—pianos a mango—mangoesNouns ending in for fe f or fe +ves a story—storiesNouns ending in s,sh, ch or x + es a peachan egg, an houron, in ,in front of, between, next to, near, beside, at,behind.表示時(shí)間: at six o’clock, at C