【正文】
d/might+have+過去分詞”。 (3) 注意如果以上兩類條件句中含有助動詞、情態(tài)動詞,be或have, 則常常不用if,而用倒裝結(jié)構(gòu): ____ before we depart the day after tomorrow, we should have a wonderful dinner party. A) Had they arrived B) Would they arrive C) Were they arriving D) Were they to arrive 如果我們后天走之前他們到達(dá)的話,我們就舉行一次豐盛的宴會?!纠緾ome tomorrow if possible. 可能的話,明天來。那么,除了if之外,是否還有其他連詞也可以引導(dǎo)條件狀語從句呢?回答是肯定的,不僅有,還有很多。下面就這些詞的用法以例句的形式進行一下簡單總結(jié)?! nless it rains, the game will be ,比賽將照常進行?! can tell you the truth on condition that you promise to keep a ,條件是你答應(yīng)保守秘密。t go too far from the river ?! upposing it rains, shall we continue the sports meeting? 倘若下雨,我們的運動會還要繼續(xù)舉行嗎? Supposing something should go wrong, what would you do then? 假如出了什么問題,你準(zhǔn)備怎么對付? 4. provided ,除非,以……為條件 provided (that) +從句表示一種假設(shè)條件?! e won39?! 纳鲜隼淇梢钥闯鰅f, unless, on condition (that), supposing, provided等詞引導(dǎo)的條件狀語從句,主從句條件關(guān)系分明,結(jié)構(gòu)清晰。如: but for 若非,要不是 But for the rain, we should have a pleasant ,我們的旅行肯定會很愉快。練習(xí):單項選擇1. You will be late ____ you don’t leave immediately. A. unless B. until C. if D. or2. ____ you keep icecream in a fridge, it melts. A. Unless B. Until C. If D. Or3. If you ____ a fish out of water, it ____ . A. will take/will die B. take/dies C. will take/dies D. took/dead4. If you _____ your timetable every night, you ____ which books to take. A. will check/will know B. check/know C. will check/know D. check/will know5. You ____ toothache