强调句型的两种变形形式: 一般疑问句形式:Is/ Was it … that…? 特殊疑问句形式:Who/ Whom /When/ When 等 + is/ was it that …?1)Was it in 1979 ______ the American astronaut succeeded ______ landing on the moon? (上海 94) A. when; on B. that; on C. when; in D. that; in (Key: D) 2)Was ______ that I saw last night at the concert? (上海 95) A. it you B. not you C. you D. that yourself (Key: A) 3)Who was it that you met in the street yesterday? 昨天你在街上遇到的是谁? Where was it that you met Jack yesterday? 你昨天是在哪里遇到杰克的?It was five o'clock in the afternoon _____ they climbed up to the top of the mountain.It was at five o'clock in the afternoon _____ they climbed up to the top of the mountain.A.since B.when C.that D.until /has beem+一段时间+ since-clause
这个句型表示从since从句谓语动作发生以后到现在或过去所经过的一段时间,意为“自从……以来已多久了”since 从句后用一般过去时,例如:
It is/has been three years since his father passed away.他父亲去逝已经有三年了。
It is/has been fifteen years since she left Shanghai.她离开上海已经15年了 4. ①It is time ( about time ,high time ) that ... 该句型中that 后的从句应该用虚拟语气,常用一般过去时态表示虚拟. It is time that children went to bed. It is time you bought a new car. It is (high ) time you made up your mind. ②It is the first ( second ... ) time that ... 该句型要和上一个句型区别开来,该句型中的 that 从句不用虚拟语气,而用完成时态,。至于用什么完成时态,由主句的谓语动词的时态决定。如果是一般现在时,后面从句用现在完成时态;如果是一般过去时,后面从句则用过去完成时态,该结构中 that 可以省去;it有时用 this 替换.常译为"是第一(二)...次..."。 It is the first time I have been here. = This is the first time I have been here.
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