2017届高考英语一轮复习精品课件：高频语法复习3_高考复习指南

2017届高考英语一轮复习精品课件：高频语法复习3

　　(3)前者常用的时间状语有：yesterday，last night，two days (months / weeks...)ago等。 Tom bought a new car a week ago. (4)后者常用的时间状语有：already，just，yet，never，before等。 I've never been to Beijing. (5)表示从过去延续到现在并包括现在在内的一段时间状语有：today，now，lately，recently，in the last / past few days / years，since then，up to now，so far等。 He has not given his response so far. 2．一般过去时与过去完成时的区别： (1)前者是针对现在说话时刻而言的。 He wrote many plays when he was at college. (2)后者则是对过去某一时刻而言的，这个时间既是过去时间的参照点，也是两者区别的重要标志。 Little Jim had learned over 2,000 English words by the time he went to college. (3)后者的时间状语常用by和before引导的短语表示：by that time，by the end of...，before 2005，by the time＋句子等。 He had published 7 books before 2009. 3．过去完成时与现在完成时的区别： (1)前者表示的是在过去某时之前已经完成或延续到过去某时的动作或状态(句中有过去特定的时间状语)。 She had been ill for a week before she came back. (2)后者表示的是延续到现在或同现在有关的动作(句中不可能有表示过去特定的时间状语)。 She has been ill for a week. 4．几种表将来时结构的区别： (1)will＋do，表示“带有意愿色彩”或询问对方或邀请等。 I'll tell you all about it. Will you please turn down the radio a bit？The baby is sleeping. (2)shall＋do，用于第一人称，表示建议和征求对方的意见。 Shall we go and see Mary who's in hospital? (3)be going to＋do，表示打算、计划、准备做某事。 They're going to learn English next term.