科技英語(yǔ)課件第九章-句子成分省略

1、 第九章 句子成分的省略西安電子科技大學(xué) 并列句中的省略：第二個(gè)分句中與第一個(gè)分句相同的東西可以省去。（這時(shí)前后兩個(gè)分句的句型必定是相同的）9.1 并列句中的省略 判斷這種省略的關(guān)鍵是抓等立連接詞（主要是“and”；有時(shí)用分號(hào)）： 在連詞后似乎是“亂七八糟”的； 對(duì)照前面的分句，找出省略的東西。西安電子科技大學(xué) The emitter junction （發(fā)射結(jié)）of a transistor requires forward bias（正向偏置）and the collector junction（集電結(jié)）reverse bias（反向偏置）. Matter consists of mole

2、cules and molecules of atoms. 9.1 并列句中的省略西安電子科技大學(xué) Capital letters（大寫字母）are used to denote（表示）matrices（矩陣）and lower-case letters（小寫字母）to denote vectors（矢量）. The ponents（分量）which are directed toward（指向）the right of the origin（原點(diǎn)）are considered as positive, and those toward the left, negative.9.1 并列句中的

3、省略西安電子科技大學(xué) A great many kinds of transistor exist, and many versions（型號(hào)）of each kind. The load resistance（負(fù)載電阻）may be small and the applied voltage of the order of several volts.9.1 并列句中的省略西安電子科技大學(xué) The first condition for equilibrium（平衡）ensures（確保）that a body should be in translational（平動(dòng)的）equilibri

4、um; the second, that it be in rotational（轉(zhuǎn)動(dòng)的）equilibrium.9.1 并列句中的省略西安電子科技大學(xué) In the table（表）, a notation（標(biāo)記）of infinite（無(wú)限大的）impedance（阻抗）indicates that the terminating（終端的）impedance should be a minimum（最小值）of 10 to 100 times the nominal（標(biāo)稱的）impedance at the specific port（特定端口）, and zero that it sho

5、uld be well less than a tenth the nominal impedance at the port and less than a hundredth if possible.9.1 并列句中的省略西安電子科技大學(xué) 兩個(gè)介詞（或一個(gè)介詞和一個(gè)動(dòng)詞等）共用賓語(yǔ)的情況 It is necessary to find out the current through, and the voltage across, the resistor. In the primary（初級(jí)）the induced（感應(yīng)的）voltage is practically（幾乎）equal

6、to, and opposes, the applied voltage.9. 2 兩個(gè)介詞共用賓語(yǔ)的情況西安電子科技大學(xué) This voltage is always greater than or equal to 0.4 V. The student should enjoy, rather than be intimated（恐嚇）by the quantum（量子）nature of the laser. The acceleration（加速度）is directly proportional to, and in the same direction as, the applie

7、d force（外力）.9. 2 兩個(gè)介詞共用賓語(yǔ)的情況西安電子科技大學(xué) It is the existence of and the ability to control precisely（精確地）these two independent charge-transport mechanisms（傳送電荷的機(jī)制）that make possible all junction（結(jié)型）semiconductor devices. Behavior of and Requirements for Internet Firewalls（防火墻）9. 2 兩個(gè)介詞共用賓語(yǔ)的情況西安電子科技大學(xué) Ch

8、apter 4 Measurements of, with, and in the Presence of Noise The consultation（磋商）activities of and the pertinent（中肯的）suggestions and corrections made by the late（已故的）Emery L. Simpson, are gratefully acknowledged（深表感謝）as being of utmost（極大的）aid in the preparation（撰寫）of the first two editions（版本）.9. 2

9、兩個(gè)介詞共用賓語(yǔ)的情況西安電子科技大學(xué) *這位教授（professor）在研究（research）和應(yīng)用（application）沃氏函數(shù)（the Walsh Functions）方面起了積極的作用。9. 2 兩個(gè)介詞共用賓語(yǔ)的情況西安電子科技大學(xué) This professor has played an active role in the research on and the application of the Walsh Functions.9. 2 兩個(gè)介詞共用賓語(yǔ)的情況西安電子科技大學(xué) 1、一般形式從屬連接詞+ 形容詞分詞介詞短語(yǔ)名詞 （省去了“it is was”或“they

10、are were”）9. 3 省略式狀語(yǔ)從句西安電子科技大學(xué) Metals expand when heated. A constant number, however = no matter how large, is never spoken of as infinite（無(wú)窮大）.2、固定表示法if any if so if not9. 3 省略式狀語(yǔ)從句西安電子科技大學(xué)ifwhenwheneverwherewhereverpossiblenecessary Each new development is naturally（自然）at first very imperfect（不完善的

11、）and few, if any, people recognize its possibilities.9. 3 省略式狀語(yǔ)從句西安電子科技大學(xué) 3、在由“no matter = ever”引導(dǎo)的從句中可省去“is;are;may be” The same physical principles are involved（涉及）whatever the shape of a conductor. The ammeter（安培表）(whatever its resistance) reads the current through it.9. 3 省略式狀語(yǔ)從句西安電子科技大學(xué) 一個(gè)特殊句型：

12、由“hence thus”引出的句中一般均省去謂語(yǔ)動(dòng)詞“comes results” The stream（流）of electrons is emitted from the cathode（陰極）of the electron gun（電子槍）, hence the name “cathode ray .”9. 4 一個(gè)特殊句型 西安電子科技大學(xué) The transistor in the figure（圖）has its semiconductor materials arranged p-n-p; hence the name pnp transistor . Proteins（蛋白質(zhì)）are essential（必不可少的）to the growth and the rebuilding（恢復(fù)）of body tissues（人體組織） hence their importance .9. 4 一個(gè)特殊句型 西安電子科技大學(xué) The meter bridge（米橋）is usual