before, after, and until, the detailed points to be written

before

prep.In....Before; Before, better than; In front of....of the faces; Rather...;

conj.In....before the trapped tung; In....Before; than....Earlier; Rather...;

adv.Before, once upon a time; In front, in front;

afterprep.…Post; (indicates time) in....Later; (I indicate position, order) in....Behind;

conj.In....Later;

adv.Later, after that;

adj.Later, later;

whenadv.When; (after the expression used in the time of the Wanglatan) the bureau beam at that time; At that time; Then;

conj.In....Time; Since; If;

pron.When; Then;

n.Time, time; Date; Occasion;

untilprep.to....Until; In....Before;

conj.to....So far, in....Before; Until....Just;

1、he will come back after next month.

2、i was right after all.

3、your name comes before mine on the list.

4、she said it before the witness.1. Usage of before:

Before can be used to represent time. First of all, it can mean "before, in....Before", which can be followed by a noun or number indicating a specific date, time, etc., or a noun indicating a time or action. Secondly, it can mean "doing....before", followed by v -ing.

Again, it can mean "immediately on....Before;

Before is used in a negative sentence and can also mean "until..."Until; Note: After before, only nouns indicating time points can be followed, but nouns indicating time periods cannot be followed.

Before can be used to denote a dynamic or static position, meaning "in....before", as opposed to behind.

Before can be used to represent "in.... on a sequence or arrangementBefore "or" dwelled in....before", as opposed to after. Extensions can be used to denote comparisons, i.e., "first", "better", "heavier" in terms of rank, value, importance, ability, etc. By extension, it can be used to indicate a preference for something, i.e., "preferred" or "with it....rather".

2. Usage of after:

After can be used as a conjunction to connect a temporal adverbial clause, and the present tense is generally used in the clause to indicate the future.

After is often used as an adverb with soon, ever, and is usually used after a noun that denotes time.

After is not used as an adverb to compare ranks.

The use of after and in: from a certain time to how much time later, instead of after, use in. If it means "after a certain moment, date or event", use after.