Past - achieved. Present - achieve/achieves/achieving. Future - will achieve.
The past tense is "achieved." (a verb's silent E is dropped when adding -ed)
the past tense of am is was and the past tense of has is had
The past tense of "has" is "had" and the past tense of "have" is "had."
Was and were are both the past tense of be. The present tense is: I am he is you are they are The past tense is: I was he was you were they were
"will be" is the future tense of "be". The past tense of "be" is "was/were".
The past tense of "she do" is "she did."
The word "were" is past tense. It is the past tense of the verb "to be."
Descriptive writing can be written in either past tense or present tense. The choice between past and present tense depends on the author's stylistic preferences and the effect they want to achieve in the writing.
The past tense of "will" is "would" and the past tense of "be" is "was" or "were" depending on the subject (singular or plural).
The past tense of "have" is "had."
The past tense of "you will not" is "you would not."