新概念英语第 2 册 Lesson52~54 重点内容解析新概念英语第 2 册 Lesson52 重点内容解析重要句型或语法1、现在完成实行时该时态是第二册区别与第一册,新增出来的时态主要用来表示 过去发生的动作,持续到现在,而且还会继续持续下去如:I have been working hard all morning.I have been trying to get my new room in order.2、同源副词所谓“同源副词”指的是某些形容词同时具有两个不同形式的副 词,而且含义不一样比如:形容词 deep 有两个副词,即 deep(物理 意义上的深的)和 deeply(抽象意义上的深深地),比如:The cave is very deep. (这个洞穴很深)They are deep in love with each other.(他俩相互深爱着对 方)课文主要语言点We have just moved into a new house and I have been working hard all morning. 1)本句话是对比现在完成时和现在完成 实行时的典型例子。
前半句用了现在完成时,因为要表达的是刚刚搬 进了新家,而后半句用了现在完成实行时,是因为要表达整个上午一 直都在忙着 2)move into...,搬进某处注意与 move in(搬进,不 及物,后面不接宾语)和 move to...(搬到某地,是较大的地点名称)的区别 3)hard,努力地,是个副词注意该词源于形容词 hard(努力 的),需要注意区分副词 hard 和 hardly(几乎不) 4)all morning, 整个上午,相当于 all the morning注意“all+时间”表示持续的一 段时间,是实行时的标志I have been trying to get my new room in order. 1)本句话 之所以也采用了现在完成实行时,是因为这句话时紧接着上句话中所 说的 have been working all morning,解释到底在忙什么 2)get...in order,把...整理好be in order,井然有序相反的 表达的是:be out of orderThis has not been easy because I own over a thousand books. 1)句中的 This has not been easy 能够改为 It is not easy, 因为该句要表达的是要做好这件事情不容易的客观事实。
2)own,拥 有该词也能够用作形容词,表示“自己的”其常用的短语是:on one's own,独自、独立To make matters worse, the room is rather small, so Ihave temporarily put my books on the floor. 1)to make matters worse,固定短语,表示“更糟糕的是...” 2)rather,非常、相当 该词一般用来修饰贬义的或消极的形容词或副词,和它意思相同但用 法反的是 fairly ,该词主要用来修饰褒义的或是积极的形容词或副词 3)temporarily,暂时地、临时地源自形容词 temporary(暂时的、临 时的)At the moment, they cover every inch of floor space and I actually have to walk on them to get in or out of the room. 1)at the moment ,此刻、现在相当于 now 2)cover ,占据、覆盖 3)every inch of+地点,表示“某个地方全是...” 4)space,空间。
5)actually,实际上源自形容词 actual(实际上的)A short while ago, my sister helped me to carry one of my old bookcases up the stairs. 1)a short while,一会儿while 相 当于 moment 2)up the stairs,上楼She went into my room and got a big surprise when she saw all those books on the floor. 1)get a big surprise,感到很惊 讶 2)注意 all those books 中的 all 起强调作用This is the prettiest carpet I have ever seen,' she said. 1)This is the+级+名词+sb. has/have ever done,表示“这是某人 见过的或做过的最...的...”名词后面省略了关系代词 that 2)carpet,地毯(用来踩的)注意与 blanket(毛毯,用来盖的)的区别。
She gazed at it for some time then added, 'You don't need bookcases at all. You can sit here in your spare time andread the carpet!' 1)gaze at注视、凝视相当于 stare at 2) 句中的 then added 前面加上 andadd,补充道、接着说 3)not...at all,根本不、一点也不 4)in one's spare time,在 业余时间 5)read the carpet,此处的 carpet 指的是作者的 over a thousand books新概念英语第 2 册 Lesson53 重点内容解析重要句型或语法时态复习本课主要对比复习一般过去时、现在完成时和现在完成实行时的 用法比如:I stayed at this hotel five years ago.Have you ever stayed at his hotel?I have been staying at this hotel for three weeks.课文主要语言点At last firemen have put out a big forest fire in California. 1)注意 at last 放在句首,突出了后面发生的事情,具 有强调作用。
2)put out,扑灭、熄灭 3)a big forest fire,森 林大火Since then, they ahve been trying to find out how thefire began. 1)since then,自从那之后这是完成时的标志性时间 状语 2)本句的谓语动词 try 采用了现在完成实行时,说明消防员一 直都在努力扑火 3)find out,查清楚、弄明白 4)how the fire began,在句中用作 find out 的宾语注意虽然这句话时问句,但因 为被用作了从句,所以要恢复正常语序此外,要注意 begin 用了一 般过去时,是因为作者想表达的意思是:火在过去是怎么烧起来的Forest fires are often caused by broken glass or by cigarette ends which people carelessly throw away. 1)本句话采 用了一般现在时,是因为在阐述客观事实 2)which 引导的是限定性 定语从句,修饰先行词 broken glass 和 cigarette 3)carelessly, 马虎地、不小心地。
相反的表达是 carefully 4)throw away ,丢弃、 丢掉Yesterday the firemen examined the ground carefully, but were not able to find any broken glass. 1)examine ,检查、检测 其动作名词为 examination,可简写为 exam;表人的名词为 examiner 2)注意 but 后面省略了 they,因为前后主语是一致的They were also quite sure that a cigarette end did not start the fire. 1)be sure of/about sth.,对...很肯定如果后 接句子,则用法为:be sure that... 2)start,引起This morning, however, a firemen accidentally discovered the cause. 1)注意 however 能够放在句首、句中和句末,但:在句首 时,后面要用逗号隔开;在句中时,前后都要用逗号隔开;在句末时,前面要用逗号隔开。
2)accidentally,偶然地该词源自 accident(偶然性或突发性事故) 3)discover,发现、探索注意该 词的构词方式为:dis-+cover,其中的 c 在发音时要浊化为[g]其名 词形式为 discovery 4)cause,起因该词能够用作动词,表示“导 致”He noticed the remains of a snake which was wound round the electric wires of a 16,000-volt power line. 1)notice,注 意到该词能够用作名词,表示“通知;告示” 2)remains,尸体、 残骸 3)which 引导的是限定性定语从句,修饰先行词 a snake 4)wind round,缠绕在...上注意 wind 在此用作动词,其中的 i 的 发音为[a],要注意 wind 作为名词中的 i 的发音为[]此外,还要注 意的是作为动词的 wind,其过去式为 wound,但其中的 ou 发音为[au], 要注意与名词 wound(伤口)的发音区别,其中的 ou 发音为[u:] 5)electric,带电的。
其名词为 electricity 6)power line,电力 线In this way, he was able to solve the mystery. 1)in this way,通过这个办法 2)be able to,好不容易得以、能够3)solve the mystery,解决谜团The explanation was simple but very unusual.1)explanation,解释源自动词 explain 2)simple,简单的注意 与 easy 的区别:simple 侧重事情显而易见,不难懂;而 easy 侧重事情 的难度小,容易做 3)unusual,不寻常的源自 usualA bird had snatched up the snake from the ground and then dropped it on to the wires. The sanke then wound itself round the wires. 1)snat。