(與動(dòng)詞be，seem，appear 連用時(shí)，代替句中的主語(yǔ))(used to introduce a clause or sentence)：T～is a letter for you. 有你一封信。T～are several different kinds of pepper. 胡椒有幾種不同種類(lèi)。T～don't seem to be any mistakes in this. 這個(gè)似乎沒(méi)有什么錯(cuò)。T～appeared to be nobody in the classroom. 看來(lái)教室里沒(méi)有人。T～were staff meetings and a press conference daily. 每天都舉行全體員工會(huì)和記者招待會(huì)。T～was (or were) a horse and a cow in the pasture. 牧場(chǎng)上有一匹馬和一頭牛。T～was (or were) a glass，two plates，and a teapot on the shelf. 架子上有一個(gè)杯子，兩個(gè)盤(pán)子和一把茶壺。