(一段时间)before (动词的一般现在时)要过多久……/ 过不了多久

　　It was/ wasn’t (一段时间) before ( 动词的过去时)过了多久……/过了没多久

　　It will be a long time before the professor finishes his dictionary.

　　那位教授需要很长时间才能把他的字典编译完。

　　It wasn’t months before they paid another visit to China.

　　没过几个月他们就又访问了中国。

　　21. It is /was （被强调部分） that

　　……

　　It was I not he that was to blame for what happened yesterday.

　　昨天发生的事完全应该怪我，而不能怪他。

　　Who was it that was to blame for what happened yesterday?

　　昨天发生的事完全应该怪谁？美丽的城市武汉(A Beautiful City Wuhan)Located in the middle of China ,Wuhan is a good place for tourists.It is a pleasant city with beautiful lakes,many parks and modern malls which are worth visiting.They all are waiting for you.Hubei province is called“A province with thousands of lakes”.The East Lake in Wuhan, much bigger than the West Lake in Hangzhou is as beautiful as the West Lake. The best way to experience the East Lake is to take a boat tour. It must be memorable.

　　Walking along the Chang jiang River is perfect . While walking on the bridge, you can get a view of three parts of Wuhan .It is really a feast for the eyes.Hankou is Wuhan’s commercial heart.There are many modern skysckyscrapers there. It’s a shopper’s paradise. The famous business street is called Jianghan Road.Yon can enjoy the local special food and explore the lively nightlife.

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