71. be ashamed of 以…為羞恥

a) I behaved badly yesterday and I am ashamed (of myself) now. 我昨天表現不好，我現在感到很慚愧。

72. assure sb of sth 向…保證, 使…確信

a) I assure you its quality. 保證質量

73. attach (to) 縛, 系 ,結

a) We should attach primary importance to the development of economy.我們要把發展經濟的工作放在第一位。

74. make an attempt at doing sth (to do sth) 試圖做…

a) If you make an attempt to do something, you try to do it, often without success.

75. attend to (=look after) 關注；注意：

a) We'll attend to that problem later.

b) 稍后我們將關注那個問題

c) The staff will helpfully attend to your needs.

76. attend on(upon)(=wait upon, serve) 侍候

a) attend on one's master 侍候主人

77. attitude to/ toward …對…的態度/看法

a) People's attitude towards the skyscrapers varies widely. 人們對這些摩天大樓的態度很不相同。

78. attribute…to…(=to believe sth to be the result of…)把…歸因于

a) David attributed his company's success to the unity of all the staff and their persevering hard work.

b) 大衛說他們公司之所以獲得成功是由于全體員工的團結和堅持不懈努力工作的結果。

79. on the average (=on average, on an average) 平均

a) On average, American firms remain the most productive in the world.

b) American shares rose, on average, by 38%.

80. be aware of (=be conscious of , beware)意識到

a) I was not aware of the fire. 我沒有意識到火。