Readers are familiar with this tense because they are used to being told a story that has already taken place. For most verbs you add an 'ed' at the end of the word to change it to the past tense ...

The abstract is usually in the past tense due to it showing what has already been studied ... Passive voice also allows one to help move words to emphasize them. Passive voice can also be useful when ...

Swam' is the correct past tense of the verb to swim, not 'swimmed'. 2. For words that end in a short vowel sound followed by a consonant, you need to double the last letter then add the suffix.

(Sentence 2 happens to be in the past tense, but 3 is not; both 2 and 3 are in the passive voice.) 2. The passive voice uses more words than the active voice. 3. A sentence with a verb in the passive ...