The adverbial of time in the past tense is

1. The common adverbials of time are: yesterday, the day before yesterday, last night/week/month, time word+before (for example, three days ago), in/in+past time word (for example, at 20 10), just now, at that time, that year, one day, a long time ago, and so on.

For example:

Two years ago, she bought an expensive mountain bike.

However, 20 billion tons of rice were produced recently last year. However, last year's rice production was close to 20 billion tons.

2. In those days, the common adverbial of time: (just) Then, at that time, yesterday afternoon, the whole morning, the whole day yesterday, from 9: 00 to 10 last night/night, and so on.

For example:

May I ask what you did in my restaurant yesterday? What did you do in my restaurant yesterday?

It was a cold day and his jacket was lying on the back of the chair.

3, the past perfect tense, common adverbial symbols of time: before, until the last $ TERM/ week/month/year, etc.

For example:

When he arrived at the party, most of the guests had left. When he arrived at the party, most of the guests had left.

(2) By1990s, this figure had dropped to about 50,000. By the 1990s, the number of Tibetan antelopes had dropped to about 50,000.

Extended data

Adverbials of time are usually placed at the end of a sentence or at the beginning of a sentence, indicating actions that occurred and completed at a certain time in the past, or past habitual actions, without emphasizing the influence on the present, but only explaining the past. An adverbial of time can only express one tense, which can be divided into past tense, present tense and future tense.

Past tense can be divided into general past tense, past continuous tense and past perfect tense. The present tense is divided into ordinary present tense, present continuous tense and present perfect tense. The future tense is divided into general future tense, future continuous tense and future perfect tense.

The changing rules of verb past tense can be divided into the following five categories:

(1) generally add -ed after verbs, such as: pull-pull, boil-boil.

(2) the end is e plus d, such as: taste- a little taste.

(3) A stressed closed syllable with only one vowel letter and one consonant letter at the end should be linked with -ed, such as stop-stop.

(4) If the consonant +y ends, change Y to I and add -ed, such as: study-studied.

Baidu encyclopedia-adverbial of time