by

back / in back of /
at the back of

be married /
get married / marry

be going to do / will

because /
because of

become / get / grow / go

bed and breakfast / inn / hotel / motel / youth hostel / lodge

before / in front of

begin / start

big / large / great

born / borne

borrow / lend

both / both of
　

breath
　

bring / take

broad / wide

but

by / until


	by / until

A.	by는 ...까지(not later than) 즉 시점만 의미한다.
1.	Be back by ten o'clock.
2.	I'll let you know by Monday.
3.	Finish this work by the end of the week.
4.	I'll be home by six o'clock.
5.	We had all arrived by the time he came.
6.	I shall have finished it by tomorrow.
7.	Can you repair my digital camera by Thursday.
8.	Guests must check out by 12:00.

B.	until은 어떤 시점까지 지속적으로 계속되는 상태나 상황에 관하여 말 할 때 사용되며 ...까지 라는 의미이다.
1.	I worked on the assignment until 11 o'clock.
2.	It rained until lunchtime.
3.	Wait until noon.
4.	We worked until noon, and then had lunch.
5.	No, I'll have to keep it until Saturday.
6.	It was cold from December until April.

I'll let you know
by Monday.

Guests must
check out by 12:00.

We worked until noon, and then
had lunch.