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 _______________(計劃將投資增加一倍).

　　二、時態(tài)

　　1) Be quick, _______________(否則等我們到達(dá)教堂時婚禮就已經(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).

　　一、倍數(shù)增減的表示法

　　1) is 2.5 times greater than Force N2

　　(考點(diǎn)：倍數(shù) + 形容詞/副詞比較級 + than)

　　2) reacts three times as fast as the other one

　　(考點(diǎn)：倍數(shù) + as + 形容詞/副詞 + as)

　　3) is 49 times the size of the moon

　　(考點(diǎn)：倍數(shù) + 名詞)

　　4) wants to raise the rent by a third

　　(考點(diǎn)：動詞 + by + 數(shù)詞/百分比/倍數(shù))

　　5) plan to double their investment

　　(考點(diǎn)：double + 名詞)

　　二、時態(tài)

　　1) or the wedding will have finished by the time we get to the church

　　(考點(diǎn)：將來完成時)來源：

　　2) the children had fallen asleep

　　(考點(diǎn)：過去完成時)

　　3) my sister will be taking her vacation at the seaside

　　(考點(diǎn)：將來進(jìn)行時)

　　4) have been revising my resume all the morning

　　(考點(diǎn)：現(xiàn)在完成進(jìn)行時)

　　5) No. It has been five years since I went on holiday

　　(考點(diǎn)：It has been … since sb. did sth. 表示某人有多長時間沒有做某事了)

　　6) He has been in the army for 5 years

　　(考點(diǎn)：1. 現(xiàn)在完成時;2.要用持續(xù)性動詞才能接一段時間)