* The end of the wires are soldered for fear that they should fray during vibration.
线头要焊牢,以免震动时松动。
5. should + have +过去分词句型
should + have +过去分词结构用于表示过去的事情,如果是肯定句,说明某件事应完成而未完成;如果是否定句,表示发生了不应该发生的事情。肯定句可译为“本应该”、“本该”,而否定句可译为“本不该”等。有时,这种用法也被当作虚拟语气的ー种。如:
* The dynamite itself should have been implanted in a matrix of inert materials.
炸药本应该被灌注在ー种惰性物质的填料内。
* The machine should not have been so bulky.
这台机器本不该这么笨重。
* Its contact fatigue life should have been comparable to steel.
它的接触疲劳寿命本应该比得上钢质的。
责任编辑:admin