解释一下词组：run into

run

into

是个多义词，有偶然碰见；遭遇(困难等)；***计，达到…之多；撞在…上

而run是及物动词

vt.

有以下多种意思；

1.使跑,使奔

2.参加(赛跑、竞赛);同...比赛;使(马等)比赛

3.驾驶,开(车)

She

ran

the

car

off

the

road.

她把车开离了道路。

4.开动(机器)

He

has

learned

to

run

farm

machines.

他学会了开农场的机器。

5.办;经营,管理

They

have

the

right

to

run

their

own

affairs.

他们有权管理自己的事务。

They

ran

the

kindergarten

extremely

well.

他们把幼儿园办得很好。

6.流,使流

7.使处(于)[(+into)]

8.冒(危险)

He

is

not

willing

to

run

the

risk

of

losing

his

money.

他不愿冒赔钱的风险。

9.使穿过;刺

10.使撞

11.(连续)刊登,刊印

The

newspaper

ran

the

review

on

page

four.

报纸把这则评论刊登在第四版上。

12.冲过,撞过

13.发(烧)

The

child

is

running

a

temperature.

孩子有热度。

所以你那三个短语就好理解了，以后碰到run的问题也不用怕了

run

into

sb撞到某人或偶遇某人

run

into

problems遇到困难

run

a

car

开车