国内外的医学文献中都要用英语文摘，如何在英语文摘中正确地使用时态，是许多医学工作者感到困难的问题。其实，只要我们弄清楚：（1）哪些是研究前做的工作；（2）哪些是研究过程中做的工作；（3）哪些仅是当前的结果；（4）哪些是客观真理等问题，我们就能够正确地运用时态 How to correctly use the tense in English Abstracts is a problem that many medical workers find it difficult to use English abstracts in medical literatures at home and abroad. In fact, as long as we figure out: (1) what are the pre-research work; (2) which are the work done in the research process; (3) which are the current results only; (4) what are the objective truths, We can use the tense correctly