by 在...旁边 near/beside/at/by
at the door
sit at the table
by the river
next to
He sits next to me.
who is the next?
紧邻着
the next door to my house
near 在附近
beside/next to 与...相邻
at the door 紧挨着
near the village
next to /beside the village
at the table
by the river
some time later 一段时间之后 some time ago 一段时间以前
a few hours earlier
put out 人为的熄灭火
be out 火自动熄灭
I put out the fire.
The fire is out.
in the middle of the night=midnight
at midnight 在午夜
wake up 醒来 主语自己醒
wake sb up 唤醒
begin doing/start doing/begin to do/start to do
leap out of 跳出来
如果强调某东西自动形成,则可以用主动态,如果强调某东西是人为的,用被动态
When I'm getting close to the door,the door opened.
The door opened.
The door was opened.
river formed
The bus stopped 自动的
The bus was stopped 人为的