必修三　UNITS 3～5 1．in case of...(＋n.)“以防；萬一”；in case that...“以防，萬一……”(謂語動詞用一般現在時態或should＋動詞原形) In case of fire，what should we do？一旦發生火災，我們該怎么辦？ 句型公式妙筆生花 Please remind me about it in case I forget/should forget.萬一我忘了，請提醒我。 2．強調句型It is/was＋被強調的部分＋who(主要指人時)/that＋其它部分 It wasn’t until his father came back from work that he did his homework. 直到他父親工作回來他才做作業。 It is only when you nearly lose someone that you fully realize how much you value him. 只有你快要失去某個人時，你才意識到你是多么重視他。 It was because the traffic was very heavy during the rush hour that I was late again. 正是因為交通高峰期交通擁擠我才又一次遲到了。

　　3．祈使句(表條件)＋or/or else/otherwise＋主句(表結果)“否則……，要不然……” Please call me up before you come，otherwise/or else/or we might be out.你來之前打個電話，否則，我們也許會出去。 4．祈使句(表條件)＋and＋主句(表結果) Work hard and you will make progress every day.好好學習，天天向上。 One more effort and you will succeed.再努力些，你會成功的。