When is at in on used in a sentence not too detailed, such as before the time?

1.on, in, at denote time.

on "on a specific day".

on indicates the morning, afternoon, and evening on a specific day and a specific day.

AT is used for hours.

The time is expressed specifically with at, but there is a special at night and at noon, and the rest in, such as in the morning, etc.

The location is mostly used in (on the tree in refers to fruits, leaves, etc., on refers to alien birds, etc.) Some verbs + places are used in to large places, and small places are at These are many exceptions, and they are not explained in detail.

1. Usage analysis.

1. AT usually refers to a specific moment in time, such as at six o'clock。

2. In usually indicates a certain part of the day, such as in the morning (evening, afternoon).

3. ON specifies which day's morning or afternoon, such as on Monday morning, on a summer's day。When talking about festivals.

4. AT usually refers to the whole holiday, not just one day, such as at easter and at christmas at Christmas.

5. ON can specifically refer to a certain day of the holiday, such as on Easter Monday on the Monday after Easter, on Christmas Day (that day).

6. When talking about a month, season, year, or century, the preposition in is usually used, such as in the eighteenth century in the 18th century, in summer in summer, in march in March, in 1985 in 1985.

2. Identification and analysis.

at，in，on

These prepositions contain the words "in...... when denoting a place or timeMeaning.

1. When the AT table is located, it refers to a certain point in the spatial position; When you watch time, it refers to a certain moment in time.

2. When the location of the IN table is in, it refers to a certain three-dimensional space range; When the time is watched, it refers to a period of time or used in conjunction with the time of the year, month and season.

3. When the ON surface is located, it means that something is in contact with the surface of another thing, or borders on a certain place, etc.; When the time is watched, it refers to a certain day or a certain time on a certain day, especially the day of the week.

in is used to denote something other than day.

A period of time. Indicates year, month, season, century era).

sorry, i am late, the frist time in may.

at denotes a certain point in time.

festive or age, instantaneous or ephemeral time).

your memory is always poor at this time.

Indicates a time of day without the article).

i got up at six in the mopning.

on indicates a specific day or a certain period of time that is used in conjunction with a certain day, you were late on Monday, last week

in is used to indicate a period of time other than the day.

Indicates year, month, season, century era).

sorry, i am late, the frist time in may.

AT is used before a specific point in time, in

Month and year are added after that. Season, on

This is followed by a week, a date, or a specific day in the morning, afternoon, or evening. was AM and IS

The past tense, so he

With was, along

It is the meaning to follow.

In large time range (more than one day) such as: in tanuary, in winter, in 1999; Generally refers to in the morning, afternoon, and evening, such as: in the morning

On refers to the morning, afternoon, or evening of a particular day or day, such as: on Monday

The AT time is the most grinding and short, which generally indicates the difference between the time of the point of blindness, such as at six o'clock, at three, on and at in terms of expression time.

in means a certain year, a certain season, a certain month, a certain week, a certain day, and a certain period of time.

in a year.

in spring.

in September.

in a week.

in the morning, afternoon, evening.

But at noon and at night it is used at noon night

on means to imitate a certain day or a certain day'For a certain period of time.

on Monday.

on Monday afternoon.

on March 7th on March 7th.

on march 7th, 1998.On March 7, 1998.

on the morning of march 7th, 1998.On the morning of March 7, 1998.

at represents a specific moment in time.

at eight o'clock.

at this time of the year.

at the moment.

at that time.