介词练习及答案.doc

介词练习：I、将下列句子译成英语，注意正确使用介词：1、这类计算机与那类相比有许多优点。1. This type of computer has many advantages over that one.2、我们必须解这个方程把回路电流（loop current）求出来。2. It is necessary for us to solve this equation for the loop current.3、在这新的五章中，第一章论述负反馈（negative feedback）的基本原理。3. Of these five new chapters, the first one deals with the basic principles of negative feedback.4、这个电路（circuit）中的电流（current）与电压（voltage）的相位（phase）相差90度。4. The current in this circuit differs in phase from the voltage by 90o.5、声波朝四面八方传播。5. Sound waves travel in all directions.6、通过分析该仪器的参数，我们就能够了解它的性能。6. By analyzing By the analysis of; Through the analysis of the parameters of the instrument, we can understand its performance.7、这是解该方程的一个充分必要条件。7. This is a the sufficient and necessary condition for solving the equation.8、我们是用牛顿（newton）来度量力的。8. We measure the force in newtons.9、本文介绍测量这一参数的一种新方法。9. This paper presents introduces a new method for measuring this parameters.II、将下列句子译成英语，使用介词短语来表示句中的画线部分：1、若x1，则该方程无解。1. For x1, the equation has no solution there is no solution to the equation.2、在研究电学（electricity）时，物理学家们定义了该参数。2. In their study of electricity, physicists defined the parameter.3、这个电路的工作情况类似于图110的电路。3. This circuit is similar in operation to the circuit that of Fig. 1-10.4、这部分原因是由于（due to）地球的自转。4. This is due in part to the earths rotation. 5、一当加上合适的外力（external force）后，该物体就会开始运动。5. On Upon (the) application of a proper external force, the body will start to move.其他词类练习：1. 这个信号包含的信息比那个信号多三倍。（要求用“主谓宾”的句型，并且把“信号”作主语）This signal contains 4 times more information than that one (does).This signal contains 4 times as much information as that one (does).2. 在这种情况下，温度就并不是那么（so）重要的因素了。In this case, temperature is not so important a factor.3. 他们使用了与桥同宽的钢箱。（using a noun phrase to express the underlined part）They used steel boxes the width of the bridge.4、磁铁（magnet）能吸引铁质材料（iron material），这是大家熟悉的一种现象（phenomenon）。. A magnet can attract/ attracts iron materials, a familiar phenomenon.5、电（electricity）与磁（magnetism）是密切相关的，这一点已广泛地用在工程中。Electricity is closely related to magnetism, a fact widely used in engineering.6、这个研究所是信息产业部的重点研究所之一，它建立于20世纪50年代初。One of the