英语论文写作技巧(18)

学术论文的主体部分由引言、正文和结论构成。正文部分包括方法、结果与讨论。由于学术论文所涉及的学科、范围广泛，即使在同一学科领域内，由于选题、研究方法、工作进程不同，正文部分的内容也不尽相同，写作方法也就不存在统一的规定或一成不变的模式。所以，本章只着重介绍写正文部分时一些较为典型的语言现象，希望读者能够从中寻求到一般规律。

7.1 描述研究方法

研究方法(Method)部分主要内容包括：

(1)研究工作具备的基本前提或条件，如实验材料、实验场所、设备器材等。

(2)采样、实验、获取数据，并对数据进行技术处理的方法与过程。

(3)理论分析，包括理论依据、基本原理、公式推导、数理模型等。

采样与实验过程，要根据先后顺序或步骤进行描述。例1选自描述对千屈莱这种植物生长的采样与实验过程。

例l

Materials and Methods

[1] In August 1994，entire purple loosestrife(千屈莱)plants were harvested from three habitats(生长环境)：1) an upland old field in the Cuyahoga Valley National Recreation Area in north-eastern Ohio (n=5)；2) a shallow ditch along Route 261 in Kent, OH (n = 10); and

3) the western shoreline of East Twin Lake, Portage County, OH (n = 6). These sites represent habitats which are never inundated(淹没) with water, are periodically inundated, or have saturated(浸透) soils, respectively. [2]Shoot sections (嫩枝条)of 5, 10, and 15 cm lengths were cut from these plants and positioned in flats(平地) containing a soil mixture of perlite (珍珠岩), vermiculite ( 蛭岩), and peatmoss (苔泥炭) ( 1:1:1). The flats were maintained in the Department of Biological Sciences' greenhouse where they experienced ambient meteorological conditions except for 6 seconds of mist every 3. 5 minutes between 8: 00 and 20: 00 hours daily. Shoot sections and attached leaves were examined at weekly intervals for pigment (色质) and tissue changes as well as for development of lateral shoots. After 26～28 days the sections were rinsed to remove adherent material and dried at room temperature (approximately 22℃ ) for a week. The adventitious roots from each section were removed with needle-nose forceps, dried at 60℃ for 24 hours, and then weighed to determine dry biomass. One lake site 5-cm section was lost during processing.

分析：

此部分严格按照时间顺序描述实验过程。第1段描述采样的时间、试样的来源与数量。名

搜索“diyifanwen.net”或“第一范文网”即可找到本站免费阅读全部范文。收藏本站方便下次阅读，第一范文网，提供最新高中教育英语论文写作技巧(18)全文阅读和word下载服务。