51 at first 首先,開始的時候;
52 at large未被捕獲的,大多數(shù);
53 at last 終于，最終;
54 at least至少
55 at length 最終,詳細地;
56 at most最多
57 at no time從不，決不
58 at one time曾經(jīng)，從前曾
59 at the cost of以……為代價
60 at the least 至少;
61 at times有時,間或;
62 at…speed以……的速度
63 attend on 照顧，侍候;
64 attribute … to 把……歸于
65 back up 后退，支持;
66 base on 基于
67 be able to能夠，勝任
68 be about to正打算
69 be accustomed to習慣于
70 be associated with 與……有關(guān)，與……有關(guān)系
71 be aware of 意識到;
72 be capable of 有能力干;
73 be caught 遇到，陷入
74 be committed to被交給┄,答應(yīng)承擔┄義務(wù);
75 be confined to 限制在,局限于;
76 be confined/be restricted受……限制
77 be dedicated to 奉獻,獻給;
78 be devoted to 被用于，貢獻給
79 be directed to指向，針對
80 be drawn to 被┄所吸引;
81 be due to由于，因此
82 be exposed to 暴露在┄下,處在┄的作用之下;
83 be fond of 喜愛
84 be full of 充滿他
85 be habitual to(him) 對(他來說)習以為常
86 be in order合適，恰當。
87 be involved in 參與，參加;
88 be involved with 與……有關(guān)連，
89 be left to 由┄來決定,由┄來想辦法;
90 be limited to限制在┄,限定在┄;
91 be linked to/with something 與……連接
92 be proud of 為~而驕傲。
93 be referred to被提及，被提交
94 be related to與……有關(guān)
95 be sick of 厭惡┄,討厭┄;
96 be subject to 經(jīng)受,遭受;
97 be suitable for適合于
98 be sure of 對┄的肯定;
99 be thrown in 額外贈送
100 be tied by/with被……捆綁
