you will need to use a past tense. In German, you can use the perfect tense. This also exists in English to show that you have done something: The perfect tense: How to talk about the past in ...

It is the most commonly used past tense in German. It is used in letters, emails and spoken German. It is used to describe something that you have done, but maybe do often and are likely to do ...

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 ...