文档介绍：1 a .
2 a bit of
3 a few of
4 a kind of
5 a little of
6 a lot of
7 a number of
8 a pair of
9 a piece of
10 a set of
11 able a.
12 about a.; prep.
13 above a.
14 abroad a.
15 absent a.
16 accept vt
17 accident n.
18 according to ad
19 ache n.
20 achieve v.
21 across ad.
22 act n.
23 action n.
24 active a.
25 activity n.
26 actor n.
27 actress n.
28 actually ad.
29 ad abbr.
30 ad abbr.
31 add v.
32 address n.
33 adult a.
34 advanced a.
35 advantage n.
36 adventure n.
37 advice n.
38 aeroplane n.
39 affair n.
40 afford v.
41 afraid a.
42 Africa n.
43 African a.
44 after a.
45 after all
46 afternoon n.
47 again ad.
48 against prep.
49 age n.
50 ago ad.
51 agree v.
52 agree with
53 ahead ad.
54 ahead of time
55 aim n.
56 aim at
57 air n.
58 airport n.
59 alarm n.
60 album n.
61 alive a.
62 all a.
63 all kinds of
64 all over
65 all right
66 allow v.
67 almost ad.
68 alone a.
69 along ad.
70 aloud ad.
71 already ad.
72 also ad.
73 although conj.
74 always ad.
75 amazed a.
76 ambulance n.
77 America n.
78 American a.
79 among prep.
80 an art.
81 ancient a.
82 and conj.
83 and so on
84 anger n.
85 angry a.
86 animal a.
87 announce v.
88 annoyed adj.
89 another a.
90 answer n.
91 anxious a.
92 any a.
93 anybody n.
94 anyhow ad.
95 anymore ad.
96 anyone pron.
97 anything int.
98 anywhere ad.
99 appear v.
100 apple n.
101 appointment n.
102 April n.
103 area n.
104 argue v.
105 arm n.
106 army n.
107 around ad.
108 arrive v.
109 arrive at
110 arrive in
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