complete 侧重指完成预定的任务或使某事完善，补足缺少的部分等。
finish 与complete基本同义，着重圆满地结束或完成已着手的事。
end 最普通用词，着重事情的完成。也指某种活动因达到目的而自然结束或由于某种原因而突然中止。
close 普通用词，着重行为的终止或结束，不强调其目的。
conclude 正式用词，多指以某事或活动达到预期目的而告终。
terminate 强调有一个空间和时间的限度，届时必须终止。书面语用词。
accomplish 正式用词，强调一个过程的完成；也可指依靠努力达到一定目的，或取得一定的结果。
参考例句
1. Her medical course was completed ahead of time. 她的医学课程提前完成了。
2. Use good grammar and write complete sentences. 运用好的文法，写出完全句子。
3. To complete the pencil we have to shade the eraser. 为了完成铅笔，我们必须给橡皮添加阴影。
英英解释
v.
1. come or bring to a finish or an end
2. bring to a whole, with all the necessary parts or elements
3. complete or carry out
4. complete a pass
5. write all the required information onto a form adj.
1. having every necessary or normal part or component or step
2. perfect and complete in every respect; having all necessary qualities
3. highly skilled
4. without qualification; used informally as (often pejorative) intensifiers
5. having come or been brought to a conclusion
