82. 现代科学技术的发展使我们的社会发生了巨大变化。(bring about)

 

　　83. 如果不练习说英语，你就学不好英语。(without)

 

　　84. 每个人都应该知道如何遵守交通规则，这样就能避免交通事故。(avoid)

 

　　85. 我已经认识到只有努力学习，才能学好英语。(realize)

 

　　86. 你在课堂上应集中注意力学习，否则你就不能理解老师所讲的内容。(concentrate)

 

　　87. 他又把邻居家的窗户打破了，这使他的父母很生气。(which)

 

　　88. 良好的健康取决于好的食物、运动和充足的睡眠。(depend on)

 

　　89. 那个学期他阅读的不是一本英语小说而是五本英语小说。(not… but)

 

　　90. 他是否已被那所大学录取令他的父母很担心。(whether)

 

　　81、Our monitor is regarded as the best student in our class.

 

　　82、The development of modern science and technology has brought about great changes to our society.

 

　　83、You can’t learn English well without practicing speaking English.

 

　　84、Everyone should know how to obey the traffic rules， and thus many traffic accidents can be avoided.

 

　　85、I have come to realize that one can’t learn a foreign language well unless he works hard.

 

　　86、You should concentrate on your lessons in class， otherwise you can’t understand what the teacher has said.

 

　　87、He broke his neighbour’s windows again， which made his parents very angry.

 

　　88、Good health depends on good food， exercise and enough sleep.

 

　　89、Within that term he read not one English novel but five.

 

　　90、Whether he had been admitted to that university or not worried his parents.