used to + do：过去常常表示过去习惯性的动作或状态，但如今已不存在。 mother used not to be so forgetful scarf used to take a walk (过去常常散步)be used to + doing： 对…&h...
hardly scarcely…when before, no sooner…than 和as soon as都可以表示一…就…的意思，例：i had hardly scarcely got home when it began to...
1) 动词+宾语+不定式(to do)advise allow appoint believe cause challenge command compel consider declare drive enable encourage find for...
现在分词： 表示主动，正在进行过去分词： 表示被动，已经完成 she looked tired with cooking 她由于忙着做饭，看上去有些疲倦。 he remained standing beside the table 他依然站在桌旁。...
注意： 1）would like； would like to do = want to 想要，为固定搭配。 would you like to go with me? 2）will you…? would you like…? 表示肯定含义的请求劝说时，疑问句中一...
1）过去时表示过去某时发生的动作或单纯叙述过去的事情，强调动作；现在完成时为过去发生的，强调过去的事情对现在的影响，强调的是影响。 2）过去时常与具体的时间状语连用，而现在完成时通常与模糊的时间状语连用，或无时间状语。一般过去时的时间状语:yesterday, last week，&hel...
1) for判断改错： (错) for he is ill, he is absent today (对) he is absent today, for he is ill for是并列连词，不能置于含两个并列分句的句子的句首，只能将其放在两个分句中间。2) so, therefore...
only if表示只有；if only则表示如果……就好了。if only也可用于陈述语气。 i wake up only if the alarm clock rings 只有闹钟响了，我才会醒。 if only the alarm clock had r...
9 分词 9 1 分词作定语分词前置 we can see the rising sun 我们可以看到东升的旭日 he is a retired worker 他是位退休的工人 分词后置 (i分词词组；ii 个别分词如given, left； iii 修饰不定代词 something...
1）目的状语 to… only to (仅仅为了), in order to, so as to, so(such)… as to… (如此……以便……) he ran so fast as to c...
时间状语从句，条件句中，从句用一般现在时代替将来时when, while, before, after, till, once, as soon as, so long as, by the time, if, in case (that), unless, even if, whether, th...
only in this way, can you learn english well only after being asked three times did he come to the meeting 如果句子为主从复合句，则主句倒装，从句不倒装 only when he is...
此两个连词意义相同。肯定形式表示的意思是做某事直至某时，动词必须是延续性的。否定形式表达的意思是直至某时才做某事。动词为延续性或非延续性都可 以。 正确使用这两个连词的关键之一就在于判断句中的动词该用肯定式还是否定式。 肯定句： i slept until midnight 我一直...
1）it is the first second time… that…结构中的从句部分，用现在完成时。 it is the first time that i have visited the city it was the third time that...
1) so… that 句型中的so 位于句首时，需倒装。 so frightened was he that he did not dare to move an inch 2) 在某些表示祝愿的句型中： may you all be happy 3) 在虚拟语气条件句中...
7 动词不定式 7 1 不定式作宾语1) 动词+ 不定式 afford aim appear agree arrange ask be decide bother care choose come dare demand desire dete...
try to do 努力，企图做某事。 try doing 试验，试着做某事。you must try to be more careful 你可要多加小心。i tried gardening but didnt succeed 我试着种果木花卉，但未成功。...
to 有两种用法： 一为不定式+动词原形； 一为介词+名词 动名词, to 在下面的用法中是第二种，即to+ 名词 动名词：admit to承认， confess to承认，be accustomed to 习惯于， be used to 习惯于， stick to 坚持，...
didnt need to do表示： 过去不必做某事, 事实上也没做。 neednt have done表示： 过去不必做某事, 但事实上做了。 john went to the station with the car to meet mary, so she didnt need to...
1）as, when 引导短暂性动作的动词。 just as just when when i stopped my car, a man came up to me 2）当从句的动作发生于主句动作之前，只能用when 引导这个从句，不可用as 或 while。 when you...
