For example, the tense may change between the methods section and the discussion section. The abstract is usually in the past tense due to it showing what has already been studied. Example: “This ...

For most verbs you add an ‘ed’ at the end of the word to change it to the past tense - for example, ‘she talks’ becomes ‘she talked’. However, there are some irregular verbs where the ...

The examples show that some people confuse has/have with had because they fail to understand the essence of the past perfect tense. Remember that when two things happened in the past ...

Use the past tense to report what happened in the past ... and place it in the subject position. For example, should you write "The preprocessor sorts the two arrays" or "The two arrays are ...

(Sentence 2 happens to be in the past tense, but 3 is not; both 2 and 3 are in the passive ... it is appropriate to use the passive voice when it clarifies your meaning. Here is an appropriate example ...