语法总结
suggest that ... should do
He suggested that a double railway-tunnel should be built. 建议类动词后常接 should + 动词原形的虚拟结构。
相似句：
- They suggested that a new bridge should be built.
- I suggested that he should wait a little longer.
与过去事实相反的虚拟语气
If the British had not feared invasion, it would have been completed. 这是典型的“过去没发生，所以结果也没实现”。
相似句：
- If I had known the truth, I would have acted differently.
- If they had left earlier, they would have caught the train.
现在分词作结果补充
finally connecting Britain to the European continent 用 connecting 补充说明“开通”的结果。
相似句：
- The road was widened, connecting the two villages.
- The gate opened, letting the visitors in.