专业英语第一章概要1.ppt

双重否定 no…but not…until not (none)…the less和not a little There is no material but will deform more or less under the action of force. There is no steel not exerts a force upon another without the second reacting against the first. (3) Stress Sentence It is these drawbacks that need to be eliminated and that have led to the search for new methods of construction. It is not until+时间状语+that… It is not until 1936 that a great new bridge was built across the Forth at Kincardine. It is not until the stiff concrete can be placed and vibrated properly to obtain the designed strength in the field that the high permissible compressive stress in concrete can be utilized. (4) Long Sentence 顺译法 倒译法 拆译法 (5) Clause 主语从句 宾语从句 定语从句 状语从句 (6) Translation for numbers ① 成倍增加 基本句型： A is N times as larger (long, heavy,…)as B. A is N times larger (long, heavy,…)than B. A is larger (long, heavy,…) than B by N times. The temperature on the site may be 40 times as high in summer as compared to winter. 表示倍数的单词： 表示增加的动词加上N times，by N times, N-fold等 Such construction procedure can increase productivity over threefold. ② 成倍减少 基本句型： reduce by N times reduce N times reduce to N times n-fold reduction reduce N times as much (many…) as reduce by a factor of N N times less than The production cost has reduced four times. ③ 不确定数量 去除PPT模板上的--无忧PPT整理发布的文字 首先打开PPT模板，选择