20. inform sb of /about sth　　 inform sb that

keep sb informed of　　　 TV keeps me informed of what is happening in the word every day.

19. influence 影响　　　 influence sb to do　　　　　 influence one's mood 影响…心情

influential　 有影响力的　　 be influential in reaching a decision　

18. infect　 传染　　　 be infected with 传染上…

17. inevitable　　 不可避免的　　 Death is inevitable.　　 It seems inevitable that he will lose.

16. It depends on individuals.这取决于个人。　 pay individual attention to　

an individual business man个体户　　 individual economy　 个体经济

15. indicate 表示　 The arrow indicates the direction of movement.箭头表示运动方向。

She indicated that I could leave.她示意我可以走了。

14. be independent of 不受…支配，独立于…之外, 不依赖的 be independent of outside control

13. on the increase　 在增长中　 　increase the number　　 increase one's knowledge　 增加

12. include　 包括(have sth as a part)　　　　 Your name is included in this list.

contain　 包含(have sth within itself)　　　 The bottle can contain one pound of milk.

11. live in　 lie in　　 be dressed in　　 in fear 害怕　　 in a hurry　　 in all　 in no time立刻

in case万一　 (in case of)　　 do sth in one's power = in an effort to do 尽力去做　

be in need of　 in public　　 in return for　 in charge of　 in favour of　　 in honour of

in search of　 in spite of = regardless of　　 in the distance 在远方　 in time　 in trouble

in all directions 四方　　 in one's twenties在…二十岁

be inaccessible to sb　 对…来说达不到　

This place is inaccessible to the students.这个地方不对学生开放。