81. real, true

real真的，真实的，指的是事实上存在而不是想象的，true真的，真正的，指的是事实和实际情况相符合 real gold, a true story

82. respectful, respectable

respectful尊敬，有礼貌，respectable可敬的，值得尊敬的 be respectful to the aged

83. outwards, outward

二者均可用作副词，表示向外，外面，outward还可用作形容词 an outward voyage

84. pleasant, pleased, pleasing

pleasant常用作定语，pleased, pleasing常用作表语，pleased主语常为人，

pleasing主语常为物 a pleasant trip The trip is pleasing.

85. understanding, understandable

understanding明白事理的，能体谅的，understandable 可理解的，能够懂的

an understanding girl, an understandable mistake

86. close, closely

close接近，靠近，closely紧紧地，紧密地 closely connected, stand close

87. ill, sick

ill做表语，sick定，表均可 a sick boy

88. good, well

good形容词，well副词，但指身体状况是形容词 He is well again.

89. quiet, silent, still

quiet安静的，可以发出小的声音，silent不发出声音，但可以动，still完全不动，完全无声响 He stand there still. 他站在那儿，一动不动，也不说话。

90. hard, hardly

hard努力，hardly几乎不 work hard I can hardly believe it.