文档介绍：Grammar Features 客观性( Objective )、准确性( accuracy )和精练(conciseness) 。(1) 广泛使用被动语态(2) 广泛使用非谓语形式(3) 省略句使用频繁(4) It句型和祈使句使用频繁(5) 复杂长句使用频繁(6) 后置形容词短语作定语多(语法特点) (1) 广泛使用被动语态 Grammar Features ?主体多为客观的事物、现象和过程,在叙述推理过程中切忌加进作者个人的主观臆断; ?中心是客观现象及事物本身,而非动作的发出者,把论证说明的对象置于句子主语的位置,既能突出中心,又能吸引读者的注意。(客观性) 1) Electricity can be measured in amount and quality. 电可以用数量和质量来度量。 2)Instrument transformers are installed on the high-voltage equipment. 互感器安装在高压设备上语法特点 Grammar Features 3) Electric power is generated in power generating stations or plants. 电能是在发电站或发电厂产生的 4) The meters are calibrated and the scale is designed to read the value of the desired unit. 这些仪表可以被校准并且设计了不同的量程,以便读出期望的数值。语法特点 Grammar Features (2) 广泛使用非谓语形式非谓语动词在句子中可以起到名词,形容词或副词作用,动词的非谓语形式分为动名词,分词,动词不定式。①动名词??用动名词短语取代时间从句或简化时间陈述句用动名词短语取代时间从句或简化时间陈述句 1) The signal should be filtered before it is amplified. 2) An object es hot. It is placed in the sun. Once being placed in the sun, an object es hot. 物体放置在太阳下会变热。 The signal should be filtered before being amplified. 放大信号前,应先对其进行滤波(精炼) 语法特点 Grammar Features 3) We must do various experiments before a new electronic product is designed. Before designing a new electronic product we must do various experiments. 在设计一个新的电子产品之前,我们必须做各种实验语法特点 Grammar Features ??用动名词短语做主语用动名词短语做主语 1) Changing resistance is a method for controlling the flow of the current. 改变电阻是控制电流的一种方法 2) Conducting electricity means the flow of electrons through an object. 传导电流意味着电子在物体内的流动语法特点 Grammar Features ②分词?过去分词短语替代从句中的被动语态?现在分词短语替代从句中的主动语态 1) The power supply, which is shown in block-diagram in , is a single-phase switch-mode inverter. The power supply shown in block-diagram in is a single- phase switch-mode inverter. 图1中用框图表示的电源是一个单相开关逆变器。语法特点 Grammar Features 2) A three-phase circuit, as it was pointed out above, is merely a combination of three single-phase circuits. A three-phase circuit, as pointed out above, is merely a combination