一、倍數(shù)增減的表示法

　　1) Force N1 _______________(比力N2大2.5倍).

　　2) This substance _______________(反應(yīng)速度是另外那種物質(zhì)的三倍).

　　3) The earth _______________(是月球大小的49倍).

　　4) The landlord _______________(想將租金提高三分之一).

　　5) They _______________(計(jì)劃將投資增加一倍).

　　二、時(shí)態(tài)

　　1) Be quick, _______________(否則等我們到達(dá)教堂時(shí)婚禮就已經(jīng)結(jié)束了).

　　2) When she got home, _______________(孩子們已經(jīng)睡著了).

　　3) When I prepare for the college entrance examination, _______________(我姐姐將在海邊度假).

　　4) I_______________(一上午都在修改我的簡(jiǎn)歷).

　　5) Do you often go on holiday? _______________(不，我已經(jīng)有五年沒有度假了).

　　6) He joined the army in October, 2001. _______________(他參軍已五年了).

　　三、被動(dòng)語(yǔ)態(tài)

　　1) The blackboard and chalk _______________(正在被電腦和投影機(jī)所取代).

　　2) The book _______________(到今年年底就將已出版).

　　3) Computer models _______________(可以用來(lái)演示細(xì)胞工作的方式).

　　4) When the bill of fare was brought, _______________(我驚呆了，價(jià)格大大超出了我的預(yù)料).

　　5) _______________(必須立即采取有效措施)to eliminate sandy storms.

　　四、情態(tài)動(dòng)詞

　　1) The phone is ringing, _______________(但是沒人接聽。她一定不在家).

　　2) I can’t find my sunglasses. _______________(我可能昨天落在咖啡店里了).

　　3) You screamed in your sleep last night. _______________(你一定夢(mèng)見什么可怕的東西了).

　　4) It’s a pity. _______________(你本應(yīng)該邀請(qǐng)她來(lái)參加你的畢業(yè)典禮的).

　　5) _______________(其實(shí)我沒必要穿上我最好的套裝去參加那次聚會(huì)的); most of the guests were wearing jeans and sweaters.