1) 并列结构中,or通常用于否定句,and用于肯定句。2) 但有时and 也可用于否定句。请注意其不同特点: there is no air or water in the moon there is no air and no water on the moon 在否定中并列结构用o...
1)当there be 句型的主语是一系列事物时,谓语应与最邻近的主语保持一致。 there is a pen, a knife and several books on the desk there are twenty boy-students and twenty-three girl-s...
16 虚拟语气 1) 概念 虚拟语气用来表示说话人的主观愿望或假想,所说的是一个条件,不一定是事实,或与事实相反。2) 在条件句中的应用 条件句可分为两类,一类为真实条件句,一类为非真实条件句。非真实条件句表示的是假设的或实际可能性不大的情况,故采用虚拟语气。 16...
短语动词是一个整体,不可丢掉后面的介词或副词。 this is a photo of the power station that has been set up in my hometown my sister will be taken care of by grandma su...
1) 代词each和由every, some, no, any等构成的复合代词作主语,或主语中含有each, every, 谓语需用单数。 each of us has a tape-recorder there is something wrong with my watch 2) 当主语...
1) 动词+ 不定式 afford aim appear agree arrange ask be decide bother care choose come dare demand desire determine expect elect...
时间状语一般现在时 every …, sometimes, at …, on sunday, 一般过去时 yesterday, last week...
stop doing to dostop to do 停止,中断做某事后去做另一件事。stop doing 停止做某事。 they stop to smoke a cigarette 他们停下来,抽了根烟。 i must stop smoking 我必须戒烟了。典型例题...
现在进行时的基本用法: a 表示现在( 指说话人说话时) 正在发生的事情。 we are waiting for you b 习惯进行:表示长期的或重复性的动作,说话时动作未必正在进行。 mr green is writing another novel (说话时并未在写,只...
be afraid to do 不敢,胆怯去做某事,是主观上的原因不去做,意为怕;be afraid of doing 担心出现doing的状况、结果。 doing 是客观上造成的,意为生怕,恐怕。she was afraid to step further in grass becaus...
意为:意图、打算、安排、常用于人。常用词为 come, go, start, arrive, leave, stay等。 im leaving tomorrow are you staying here till next week...
1)wash, clean, cook, iron, look, cut, sell, read, wear, feel, draw, write, sell, drive… the book sells well 这本书销路好。 this knife cuts easily ...
连接词主要有 if, unless, as so long as, on condition that 等。 if 引导的条件句有真实条件句和非真实条件句两种。非真实条件句已在虚拟语气中阐述。unless = if not lets go out for a walk unless y...
1) 用于完成时的区别 延续动词表示经验、经历; 瞬间动词表示行为的结 果,不能与表示段的时间状语连用。 he has completed the work 他已完成了那项工作。 (表结果) ive known him since then 我从那时起就认识他了。(表经历)2...
表伴随时,既可用分词的独立结构,也可用with的复合结构。 with +名词(代词)+现在分词 过去分词 形容词 副词 不定式 介词短语 举例: he stood there, his hand raised = he stood there, with his hand raise 典...
关系代词所代替的先行词是人或物的名词或代词,并在句中充当主语、宾语、定语等成分。关系代词在定语从句中作主语时,从句谓语动词的人称和数要和先行词保持一致。1)who, whom, that 这些词代替的先行词是人的名词或代词,在从句中所起作用如下: is he the man who that w...
1) its easy (for me) to do that 我做这事太容易了easy, difficult, hard, important, possible, impossible, comfortable, necessary, better; the first, t...
不定式做定语通常要放在被修饰的词后。例如: i have a lot of work to do so he made some candles to give light...
1)for sb 常用于表示事物的特征特点,表示客观形式的形容词,如easy, hard, difficult, interesting, impossible等: its very hard for him to study two languages 对他来说学两门外语是很难的。 2...
5 1 系动词 系动词亦称联系动词(link verb),作为系动词,它本身有词义,但不能单独用作谓语,后边必须跟表语(亦称补语),构成系表结构说明主语的状况、性质、特征等情况。...