Lesson 71 A famous clock
When you visit London,one of the first things you will see is Big Ben,the famous clock which can be heard all over the world on the B.B.C.一般现在时态,一般将来时态
If the Houses of Parliament had not been burned down in 1834,the great clock would never have been erected.过去完成时,过去将来时态
Big Ben takes its name from Sir Benjamin Hall who was responsible for the making of the clock when the new Houses of Parliament were being built.一般现在时态,一般过去时态,过去进行时
It is not only of immense size,but is extremely accurate as well.一般现在时态
Officials from Greenwich Observatory have the clock checked twice a day.一般现在时态
On the B.B.C.you can hear the clock when it is actually striking because microphones are connected to the clock tower.一般现在时态
Big Ben has rarely gone wrong.现在完成时
Once,however,it failed to give the correct time.一般过去时态
A painter who had been working on the tower hung a pot of paint on one of the hands and slowed it down!一般过去时态,过去完成时
希望能帮到你啊!