1. The tunnel would be well-venlilated if tall chimneys were built above sea level.
如果再建些伸出海面的高大的烟由状通风管，隧道就具备了良好的通风条件。
知识点：是本句典型的虚拟语气。
真题测验：虚拟语气
If the whole operation（ ）beforehand, a great deal of money would have been lost.
A. was not planned B. has not been planned
C. had not been planned D. were not planned
答案：选C
分析：本句考査与过去事实相反的虚拟条件句。
翻译：要是当时整个手术没有预先计划好的话，大量的金钱就白花了。
2. In 1858, a French engineer, Aime Thovme de Gamond，arrived in England with a plan for a twenty- one-mile tunnel under the English Channel.
1858年，一位名叫埃梅·托梅·德·干蒙的法国工程师带着建造一条21英里、穿越英吉利海峡隧道的计划到了英国。
知识点：a plan for a twenty-one-mile tunnel, for之后的内容是plan的后置定语从句。
