※交通手段を表す in の使い方は「前置詞 by」をご覧下さい。

1.時間を表す in(1)

1 〜月に

The school starts in April.

We are going to go to France in August.

I have five consecutive holidays in May.

last month(先月)、this month(今月)、next month(来月)

last month、this month、next month の場合、前置詞 in は不要です。

I bought a new CD last month.

He is going to move to Hiroshima this month.

They’re having a practice game next month.

2 〜季節に

I go to see the cherry blossoms in the spring.

We have many festivals in the summer.

A sports meeting will be held in the fall.

It snows heavily in the winter.

last, this, next がつく場合

季節の直前にlast, this, next がつく場合、前置詞 in は不要です。

I went to Mexico last summer.

We are going skiing to Hokkaido this winter.

My father will be transferred to the N.Y. branch next spring.

3 〜午前・午後・夜に

My brother goes for a jog in the morning.

I have an appointment with the dentist in the afternoon.

My mother must attend a PTA’s meeting in the evening.

4 〜年に

I was born in 1985.

The First World War opened in 1914.

Christopher Columbus discovered the Continent of America in 1492.

5 〜才代


He is in his thirties.

I was able to run faster in my teens.

6 〜年代に

The Bubble Economy set in the 1980’s.

Many kinds of CDs are sold well in the 1990’s.

7 〜時代に

The Restoration was achieved in the Meiji era.

The Manyoushu was finished in the Nara era.

8 過去・未来に

in the past(過去に)

There were many great men in the past.

in the future(未来に)

I want to live in a mansion in the future.

2.時間を表す in(2)

1 (今から)〜後、あと〜で

It explodes in three seconds.

The train is leaving in one minute.

A new TV program is going to start in two hours.

My sister go abroad to study English in a week.

I will be 20 in six months.

I hope to run a company in ten years.

2 〜で

I have to finish this report in two days.

I learned 300 English words in three weeks.

He grew 10 centimeters in a year.

3.場所を表す in

1 〜に、〜で


I live in Fukuoka.

I want to go to the Arc de Triomphe in France.

He was born in Nagoya.

My brother goes to college in Minnesota.

There are many temples in Nara Prefecture.

They practice baseball in the park.


He is in his room.

There are two tables in the kitchen.

There is a basement in her house.

They practice baseball in the park.

I raise some kinds of flowers in my garden.

Don’t play catch in this ground.

There are the latest training machines in the gym.

He works in the International Department.

I want to work in the Research & Development Section.

2 〜の中

Keep these documents in a drawer.

What are you hiding in the bag?

There were some books in the box.

I keep my report cards in a file.

3 方角

Hokkaido is in the north of Japan.

Okinawa is in the south of Japan.

Nagasaki is in the west of Japan.

Hokkaido is in the east of Japan.


・北… north
・北北東… north‐northeast(NNE)
・北東… northeast(NE)
・東北東… east‐northeast(ENE)
・東… east
・東南東… east‐southeast(ESE)
・南東… southeast(SE)
・南南東… south – southeast(SSE)
・南… south
・南南西… south – southwest(SSW)
・南西… southwest(SW)
・西南西… west – southwest(WSW)
・西… west
・西北西… west – northwest(WNW)
・北西… northwest(NW)
・北北西… north – northwest(NNW)

4.その他 in

in the front of 〜(〜の前)

A man is standing in front of the station.

in the back of 〜(〜の後ろ)

Please sit in the back of the car.

in charge of 〜(〜の責任者)

Who is in charge of this shop?

in cash(現金で)

I’ll pay in cash.

in a good mood(上機嫌で)

She is in a good mood today.

in a bad mood(不機嫌で)

I was in a bad mood because I lost my wallet yesterday.

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