1.individuals,characters, folks 替换 people ,persons
2.positive, favorable, rosy (美好的)，promising (有希望的)，perfect, pleasurable , excellent, outstanding, superior 替换 good
3.dreadful, unfavorable, poor, adverse, ill (有害的) 替换 bad
如果bad做表语，可以用 be less impressive 替换
eg.An army of college students indulge themselves in playing games, enjoying romance with girls/boys or killing time passively in their dorms. When it approaches to graduation ,as a result, they find their academic records are less impressive.
4.an army of, an ocean of, a sea of, a multitude of ,a host of, many, if not most 替换 many
注：用many, if not most 一定要小心，many后一定要有词。
5. a slice of, quiet a few , several 替换 some
6.harbor the idea that, take the attitude that, hold the view that, it is widely shared that, it is universally acknowledged that 替换 think (因为是书面语，所以要加that)
7.affair ,business ,matter 替换 thing
8. shared 替换 common
9.reap huge fruits 替换 get many benefits
10.for my part ,from my own perspective 替换 in my opinion
11.Increasing(ly),growing 替换 more and more( 注意没有growingly这种形式,所以当修饰名词时用increasing/growing修饰形容词时，副词用increasingly)
12.little if anything, little or nothing 替换 hardly
13.beneficial, rewarding 替换 helpful
14.shopper,client,consumer,purchaser 替换 customer
15.exceedingly,extremely, intensely 替换 very
16.hardly necessary, hardly inevitable 替换 unnecessary, avoidable
17.sth appeals to sb, sth exerts a tremendous fascination on sb 替换 sb take interest in / sb. be interested in
18.capture one's attention 替换 attract one's attention
19.facet,demension,sphere 替换 aspect
20.be indicative of ,be suggestive of ,be fearful of 替换 indicate, suggest ,fear
21.give rise to, lead to, result in, trigger 替换 cause
22.There are several reasons behind sth 替换 reasons for sth
23.desire 替换 want
24.pour attention into 替换 pay attention to
25.bear in mind that 替换 remember
26. enjoy, possess 替换 have (注意process是过程的意思)
27. interaction 替换 communication
28.frown on sth 替换 be against , disagree with sth
29.to name only a few, as an example 替换 for example, for instance
30. next to / virtually impossible 替换 nearly,almost impossible
