1
Title 标题
Titles are often not complete sentences, i.e., no verb is used.
标题通常不是完整的句子，一般不涉及到动词。
Fully device independent quantum key distribution.
If you do want to use a complete sentence, use the present tense.
如果你一定要写一个完整的句子，动词就用一般现在时。
What your Facebook profile picture reveals about your personality.
2
Introduction 引言
Present tense – use when stating general truths.
一般现在时——在陈述一般事实时使用。
Many programmers rely on 3-way merge tools to integrate changes from different branches.
Present perfect – use when describing actions that happened in the past but are still relevant today.
现在完成时——用来描述过去发生但仍然与今天相关的行为。
Classification analyses of various sorts have been used frequently for structuring document collections.
Past tense – use when discussing previous studies or past events.
一般过去式——在讨论以前的研究或过去的事件时使用。
The ACM US Public Policy Council (USACM) was established in the early 1990s.
3
Method 方法
The past tense is mostly used in the methods section.
一般过去式主要用在方法部分。
The motion was generated by rotating around a central vertical axis at the center of the point cloud using Equation (1).
Occasionally, the past perfect tense and past continuous tense are required.
有时需要使用过去完成时和过去进行时。
Past perfect tense – use when describing an action that occurred before another action.
过去完成时——用于描述一个动作发生在另一个动作之前。
Recruitment efforts were stopped once data saturation had been reached .
Past continuous tense – use when describing an ongoing action that occurred in the past.
过去进行时——用于描述过去发生的正在进行的动作。
The program team came together during major milestones to verify that the project was progressing on-schedule.
4
Results 结果
The past tense is mostly used in the results section of hypothesis-based studies.
在基于假设的研究中，一般过去时主要用于结果部分。
We found little evidence for the “filter bubble” hypothesis.
The present tense is often used when describing new methodologies.
一般现在时经常用于描述新方法。
With Scatter/Gather, rather than being forced to provide terms, the user is presented with a set of clusters, an outline of the corpus.
5
Discussion 讨论
As with introductions, a mixture of tenses is used in the discussion sections of scientific manuscripts, including the past tense, the present tense and the future tense.
和引言一样，在科技论文的讨论部分动词时态比较灵活，包括一般过去时、一般现在时和一般将来时。
Future tense – use when discussing the implications of the study.
一般将来时——在讨论研究的意义时使用。
Understanding these privacy norms will allow manufacturers to design devices that consumers are comfortable incorporating into their homes.
6
Figure/table legends 图片和表格的说明
Present tense – use when referencing the figures/tables in the text
一般现在时——在引用论文中的图表时使用
Examples are shown in Table 1 and Fig. 2.
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