Was is the past tense of be verb. The verb after was can be the present participle, which constitutes the past continuous tense; It can be past participle, forming passive voice; When was is used as a copula, the present participle and gerund phrase can be followed as predicative, or the past participle can be followed as predicative.

Definition:

What happened in the past and has ended needs to be expressed in the general past tense.

4. Indicates the action or state that happened at some time in the past.

The past tense is a verb form that expresses behavior, action and state under various time conditions.

The past tense structure refers to the grammatical formation of verb forms in the past tense.

Verb change rule

General verbs directly add -ed, for example: look-looked；; ;

Verbs ending in dumb e add -d directly, such as dance-danced；; ;

If the consonant letter ends in y, change y to I and then add ed, for example: study-studied；; ;

It ends with a stressed closed syllable and only one consonant at the end. Write this consonant twice and add -ed, such as skipskipped；;

For verbs ending in c, change c to ck, and then add-ed;

Verbs ending in L, if ending in unstressed syllables, can be copied or not written. Not all of them are written in American spelling. For example: Travel-Traveled/Traveled (USA);

Some verbs ending in -p also follow Article 6, and most of these words are composed of "prefix+noun". For example: worship-worry/worry (beauty), disability-disability/disability (beauty).