Ⅱ.单句改错

　　1. Jackson mustn't be a policeman，for he's much too short.

　　2. He should have completed his work；otherwise，he wouldn't be enjoying himself by the seaside.

　　3．The weather turned out to be fine yesterday.I needn't have take the trouble to carry my umbrella with me.

　　4. You couldn't have woken me up；I don't have to go to work today.

　　5．We must have studied last night，but we went to the concert instead.

　　【答案】　1.mustn't→can't　2.should→ must 3．take→taken　4.couldn't→needn't 5．must→should

　　描写大自然的神秘现象

　　1．介绍关于大自然的神秘现象的文章的一般包括如下内容：首先，简述神秘现象(什么样的神秘现象，何时何地发现的，科学家对此的解释，证据)；其次，各界不同的看法；最后，简单说出作者个人对此现象的认识。

　　2．时态以过去时态为主，常使用一般过去时、过去进行时等。

　　3．人称以第一人称和第三人称为主。

　　[亮点句式]

　　1．I can well remember an incident that happened on...

　　2．I was on my way to...when I saw...

　　3．I was about to do...when...

　　4．So excited was I that I couldn't help doing...

5．Looking at it in surprise，I felt...