I, the _____________, was a calculating machine in 1642 in _____________. Then I was built as an analytical machine in 1822, which was a technological ______________. I became a "_________ machine" in 1936 to _________________ any mathematical problem. I was not evry big at first. Then I became huge, the _______ of a large room before I was made smaller and smaller. I was ______________with other computers and turned out to be part of a ____________ in the early 1960s. I was able to _____________my knowledge with others ____________the World Wide Web. Since the 1970s I have been used first as a ____________ and then as a _____________ in officers and ________________. w.w.w.302edu.c.o.m

　　Many changes have happened to my ______________. First it was ___________in tubes, then on ___________and later on very small _____________. So my _________ totally changed. As I have grown older I have also grown ______________.

　　I have been widely used in many fields, such as in communication, _______________, trade and medical _____________. I have also been put into robots and space ______________ to _______________ the Moon and Mars. I'm glad I am a ______________ friend and helper of the human race.

　　Part Three Language Study

　　1. Look at these pictures. In pairs discuss ___________ they have _____________(有什么共同之处).(P17)

　　2. ________________(经过一段时间) I _____________________(已经改变了许多).

　　Over：在...时间内，在（一件事，一段时期的）过程中

　　Eg：They will have one or two informal meeting _____________(晚饭期间)

　　高考链接

　　Some students often listen to music ________classes to refresh themselves.

　　A. between B. among C. over D. during

　　3. I began as a ________________________(计算机器)in France in 1642.

　　a calculating machine = a machine for calculating

　　calculate v. 计算，核算； 推测，估计 下列句中calculate的含义

　　1）We haven't really calcalated the totl cost yet. _________________

　　2) I calculated that they would arrive at 8:00 am. ________________

拓展 1）calculate on = depend on 指望 eg：