Unit+10+I’ve+had+this+bike+for+three+years(共96张)试题.pptVIP

before?/ago? before和ago都能表示在一段时间以前，但是二者的内涵和具体用法有明显的区别： ?1.?before表示从过去或将来某一时间算起多少时间以前，由于与这一时间状语连用的行为先发生在过去或将来某一时刻之前，因此往往出现在过去完成时态或将来完成时态中。例如： I?called?him?up?last?night,but?his?mother?told?me?he?had?left?for?Wuhan?two?days?before. ?②She?said?that?she?had?married?him?five?years?before.?? 2.如果不具体表明多少时间以前，before意为从前；以前，表示从现在开始追溯到过去一段时间，或者主句的谓语动词表示的是经常、反复发生的行为，以副词的形式置于句末，可以用在现在完成时态中。例如：? ①I?have?never?been?to?Beijing?before.? ②Have?you?ever?seen?a?tiger?before?? ③?I?often?go?over?the?lessons?that?I?have?learned?a?few?days?before. ? 注意：before前的时间状语如果是特定的，含义不一样。试比较：He?said?he?had?arrived?here?a?day?before.?(一天前)? ?He?said?he?had?arrived?here?the?day?before.?(前一天)? ? ?3.?ago指的是从现在起到过去时间的某一点的一段时间。这个时间状语常与一般过去时态或过去进行时态连用。例如： ?①I?graduated?from?the?college?twenty?years?ago.? ? ②I?was?asked?what?I?was?doing?a?month?ago.? ? 4.?表示在某一时间点或事件以前时，只能用before，不用ago。因为这种用法是将before当作介词或连词使用。ago不具有这种功能。例如： ?①He?will?come?back?before?eleven?oclock.? ? 含有for，since的现在完成时的用法歌诀: 过去的动作或状态，一直持续到现在，for、since 把时间带。 用for和since填空。 ______three hours ______three o’clock ______two days ______yesterday afternoon ______I came here ______last Sunday 常见非延续性动词和延续性动词的转变 第一类：短暂动词 be + adj. die finish open/close fall ill/asleep marry sb/get married to 第二类：短暂动词 be + 介词. start/begin leave join 第三类：短暂动词 另一个动词 buy borrow become put on ( )1.How long have you been like this? ___. A. Since last month B. Last month ago C. Last month before D. Last month ( )2.His father ___ the computer for two years. A. has bought B. has had C. bought D. have had ( )3.How long have you_____ the book? I _________ it since two days ago. A. borrowed, have borrowed B. keep, have kept C. kept, have kept D. kept, kept ( )4.We have been good friends since we ___ each other five years ago. A. knew B. have known C. go to know D. know Read the article written by a father for a newspaper. What i