Generally speaking, in an abstract, the opening and concluding statements are written in the present tense or the present perfect tense, while the methods and results are expressed in the past tense.

中国大学MOOC: Three kinds of verb tenses are frequently used in English news headlines: present tense, future tense and present perfect tense.

Choose true or false according to the statement of tense which frequently used in scientific papers.——Results often use present tense. A: 正确 B: 错误

中国大学MOOC: For something that has occurred in the recent past, BrE tends to use the simple tense while AmE shows the preference for the present perfect tense.

‍While writing suggestions for future studies, you are advised to use _________.‍ A: the future tense B: the past tense C: the present tense D: the progressive tense

put the verbs in brackets into the correct tense.

When you point out the purpose / problem of research again, the is mainly used. A: present tense B: present perfect tense C: past tense D: future tense

If the research material is conventional and not a specific material reported in the paper, we use ( ). A: the present perfect tense B: the future tense C: the simple present tense D: the simple past tense

When we write about our first day of college experience, which tense do we use the most?___( ) A: Past tense B: Present tense C: Future tense

Which of the following sentences represent the past tense? Which of the following sentences represent the past tense?