beside...
“Beside”是“在……旁边”的意思
next to 是就在旁边的意思
by
He is sitting by the river/the window.
next to
He sits next to me
at
She is sitting at the table.
beside
I sit beside you.
下面两句可以解释为"在...旁边".另有意思为"在...附近"
near
There is a house near the river.
nearby
A policeman is standing nearby
BESIDE,在。。。旁边
NEXT,就在旁边
beside ..