1. He and some of his friends spent lots of time doing unusual things with it. 他和他的一些朋友把大量时间花在用它(电脑)来做不同寻常的事情上面。

　　spend表示“花钱(时间)”，它要求用人作主语。表示“为……花钱”时，后接介词on。如：

　　He spent five dollars on the book.

　　She had to spend a lot of money on food.

　　表示“为……花时间”时，spend后可接“on＋名词／代词”或“(in) doing”。如：

　　He doesn't spend much time on his homework.

　　She spent the whole afternoon(in) cleaning the windows.

　　2. He found it very difficult to sleep and he was rather angry with the man upstairs. 他发现入睡很难，并且他对住在楼上的人很反感。

　　(1)该句中it充当形式上的宾语，代替真正的宾语to sleep，句中very difficult作宾语补足语，其结构为：主语+谓语+it(形宾)+宾语补足语(for sb. )+动词不定式(真正宾语)，常用于该句式的动词有find， think， feel， consider(认为；考虑)， make等。例如：

　　The noise made it hard for me to go on with the work.

　　I found it easy to answer the question.

　　(2)be angry with sb. 和be angry about / at sth.

　　表示生某人的气时，常用介词with；表示因某事生气时，常用介词about或at。例如：

　　Don't be angry with him. He is just a child.

　　He was angry at / about what she said.

　　3. Let's move the bag， or it may cause an accident. 让我们把包挪开，要不然会出事故的。

　　(1) or是并列连词，意为“否则”。如:

　　Hurry up，or you'll be late.

　　Let's start now，or we can't get there by supper time.

　　(2) 该句是“祈使句+or+陈述句”构成的句型,相当于一个含条件状语从句的复合句。它可以改成“由if引导的否定条件状语从句+陈述句”。这个句子可以换成:

　　If we don't move the bag，it may cause an accident.

　　(3) cause在该句是一个动词,词义是“引起；促使；使发生”。如:

　　The accident almost caused a war.

　　What caused you to get so angry？

　　4. With the medicine box under her arm，Miss Zhao hurried off to look after the man. 赵老师夹着药箱,急忙去照看那个人。

　　with the medicine box under her arm表示“她用胳膊夹着药箱”,“with+名词+介词短语”表示伴随状况,作伴随状语,这种结构使语言简洁,使用相当广泛。如:

　　The poor woman walked across the street with a baby on her back.

　　(文/张新峰；英语辅导报初四普及版04—05学年度第26期；版权归英语辅导报社所有，独家网络合作伙伴新浪教育，未经许可，不得以任何形式进行转载。)