(1). Challenge sb to do sth .向…挑战，邀请…比赛
They challenge us to a swimming contest.
(2). to give (accept) a challenge ( 接受 ) 挑战
(1). Share 部分，分
Everybody ought to have his proper share.
(2). Share 参与、贡献
I had no share in the mater.
(3). Share (with,between) 分配，共有
They shared the profits between them.
I will share with you in the undertaking.
(1). instead 代替
If you cannot go,let him go instead.
(2). instead of 代替
I will go instead of you.
(1). manage to do 完成，达成
We finally managed to get there in time.
(2). manage with 办事，处现事务
We can''t manage with these poor tools.
(3). manage on 生活，过活
How will she manage with her husband gone.
(1). afford to do 足以承担
I cannot afford to pay such a high price.
(2). afford 产生
Reading affords pleasure.
(1). would rather do 宁愿
He said he would rather stay at home.
(2). rather than 宁愿
I had rather dance than eat.
(1). ever 曾经
Have you ever been there?
(2). ever 究竟
Why ever didn''t you go.
(3). ever 如果
If the band(乐队)ever plays again,we will dance.
(4). ever so=very
Thank you ever so much.
(1). available 通用的，有效的
The season ticket is available for three months.
(2). available 可用的，可达到的
(1). else 此外，别的
Where else did you go?
(2). else 否则，不然
Hurry,else you''ll be late.
(1). involve 包括
Housekeeping involves cooking, washing dishes, sweeping and cleaning.
(2). involve 使陷于
One foolish mistake can involve you in a good deal of trouble.
A sentence that is involved is hard to understand.
(4). involve 包围
Clouds involved the hilltop.
题目：Nowadays the way many people interact with each other has changed because of technology. In what ways has technology affected the types of relationships that people have? Has this been a positive or negative development?
It is true that new technologies have had an influence on communication between people. Technology has affected relationships in various ways, and there are both positive and negative effects.
Technology has had an impact on relationships in business, education and social life. Firstly, telephones and the Internet allow business people in different countries to interact without ever meeting each other. Secondly, services like Skype create new possibilities for relationships between students and teachers. For example, a student can now take video lessons with a teacher in a different city or country. Finally, many people use social networks, like Facebook, to make new friends and find people who share common interests, and they interact through their computers rather than face to face.
On the one hand these developments can be extremely positive. Cooperation between people in different countries was much more difficult when communication was limited to written letters or telegrams. Nowadays, interactions by email, phone or video are almost as good as face-to-face meetings, and many of us benefit from these interactions, either in work or in social contexts. On the other hand, the availability of new communication technologies can also have the result of isolating people and discouraging real interaction. For example, many young people choose to make friends online rather than mixing with their peers in the real world, and these 'virtual' relationships are a poor substitute for real friendships.
In conclusion, technology has certainly revolution communication between people, but not all of the outcomes of this revolution have been positive.