By time in what tense does it appear? What is the meaning?

If the latter time has not yet arrived, use the simple future tense or future perfect tense;

If this later time has passed, use the past perfect tense.

The preposition by here means: to ......So far, in ......Before.

There are three scenarios:

by + present (common present perfect tense).

by+ past in the past perfect tense.

by+ will be commonly used in the simple future perfect tense.

By and the three tenses of time plus:The past time is added after by and is used for the main clause to be in the past perfect tense.

By is followed by the present time, which is used for the main clause to be in the present perfect tense.

By is followed by the future time, and the clause is added.

The event takes place before the main clause event of laughing and ruining, and the main clause verb can be used in the simple tense.

Usage of by:Nouns, adverbs, adjectives, prepositions, when used as nouns mean "(sports competitions) bye promotion", when used as adverbs mean "passed; (time) has passed; Touch the oak next to it; short visit", when used as an adjective, means "next to."', side", when used as a preposition, means "by, been; Pass; Differ......; to ......Before. In ......Beside.

If the time behind Yu Qing has not yet arrived, the simple future tense is used.

or in the future perfect tense; If this later time has passed, use the past perfect tense.

Meaning: 1. prepBy, been; Pass; Differ......; to ......Before. In ......Beside.

2、adv.Elapse; (time) has passed; on the side; Brief visit.

3、n.(Sports competitions) bye promotion.

4、adj.Sideways, sideways.

by Reading French English [ba] Beauty [ba] Vocabulary collocation: 1, by accident accidental ; Occasionally; Suddenly; Unawares.

2. by chance ; By coincidence; Suddenly;

If the latter time has not yet arrived, use the simple future tense or future perfect tense; If this later time has passed, use the past perfect tense. The preposition by here means: to ......So far, in ......Before.

By here is "to." Time to end", by

until night; Another example: by

then; by

fiveo'clock

Until 5 o'clock.

by is the marker word of the perfect tense: by + the time of the past answer, use the past perfect tense; by+Present time, in the present perfect tense; by+ the time of the future, with the future to complete the time of the bird. Example sentence:

he was a loner by nature and by inclination.

He doesn't like to socialize early, and he doesn't intend to do it himself.

nocturnal animals sleep by day and hunt by night.

Nocturnal animals sleep during the day and hunt for food at night.

by the 1920s, he was lionized by literary new york.

Before the 20s of the 20th century, he was touted by the New York literary community.

by night, the perimeter wire was illumined by lights.

At night, the surrounding barbed wire fence is illuminated by lights.

by plus time point: If the later time has not yet arrived, use the simple future tense or future perfect tense; If this later time has passed, then the past perfect tense is used. By is an English word, noun, adverb, adjective, preposition, when used as a noun it means "(sports competition) round fight bird hail empty promotion", when used as an adverb it means "to pass; (time) has passed; on the side; "Brief visit", when used as an adjective, means "side, side", and when used as a preposition, it means "by, been; through empty sails; Differ......; to ......Before. In ......Beside.