Unit 3  Under the sea
关键单词
annual
annually
anniversary
witness
1．________ adj.每年；按年度计算
n．年刊；年鉴
→_________ adv.每年地；年度地→____________ n．周年纪念        2．________ vt.当场见到；目击 n．目击者；证人；证据        3．_____________ n．住所；住宿→_______________ v．
寄宿；供给某人膳食
accommodation
accommodate
4．________ vi.大叫；呼叫
n．叫声；喊声
yell
5．_____________ n．协作；配合
teamwork
6．________ vt.拖；拉；扯
drag
depth
deep
        7．________ n．深(度)；深处→________ adj.深；位于深处→________ adv.深深地→________ v．使加深；使强烈；
变深
deeply
deepen
urge
urgency
urgent
8．________ vt.催促；极力主张；驱策→______ ...