辨析1：assemble, accumulate, gather, collect
assemble: 强调为特定目标而聚集;
accumulate: 指通过有规律地增加而聚集;
gather: 词义广，指把分散的事物聚集在一起;
collect: 多指有计划地为一定目的而又有选择地收集。
辨析2：assume, suppose
assume: 强调未经证实把有分歧的事作为假设;
suppose: 为一般用词，词义广。
辨析3：assure, ensure, insure
assure: 强调从心理上消除疑惑;
ensure: 表示使某行为的结果得以保证;
insure: 与ensure常通用。
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