1.screw用作名词时意思是“螺丝”,转化成动词意思是“(用螺丝)将…拧紧”。引申可表示“转动”“使更有效率”“加压力于”“压榨”“鼓舞”等。
2.screw既可用作及物动词,也可用作不及物动词。用作及物动词时,接名词、代词作宾语。用作不及物动词时主动形式含有被动意义。

screw down(v.+adv.)
用螺钉钉住 fasten sth down
▲screw sth⇔down
◇ 用于be ～ed 结构
Squeaking floorboards should be screwed down.踏上去咯咯作响的地板应用螺钉钉住。

screw in(v.+adv.)
旋…进去 tighten sth in sth
▲screw sth⇔in
◇ 用于be ～ed 结构
Make sure that the hook is fully screwed in.看看钩子是否已完全旋进去了。

screw on(v.+prep.)
在…上安… fasten sth on sth
▲screw sth on sth
Why don't we screw a handle on the door?我们为什么不在门上安个把手呢?
◇ 用于be ～ed 结构
A lock was screwed on the drawer.在抽屉上用螺丝拧上暗锁。

screw out of(v.+adv.+prep.)
把…挤出来 turn sth out of sb/sth
▲screw sth out of sb/sth
The child is screwing water out of a sponge.小孩正把海绵中的水挤出来。
They screwed the money out of her by threats.他们靠威胁逼她把钱拿了出来。

screw with(v.+prep.)
用…旋牢 tighten with sth
▲screw with sth
The handle screws with these two screws.用这两颗螺钉把手就可旋牢在上面了。

用作不及物动词
▲S+～(+A)
The two pieces screw together easily.这两个部件很容易拧紧。
用作及物动词
▲S+～+n./pron.
Let's screw the two pipes together end to end.咱们把这两根管子接起来拧紧。
He is busy screwing the lock.他正忙着上锁。
He screwed the facts to suit his own purposes.他歪曲事实使其符合自己的目的。

［词源］＜中古英语screwe(螺钉,螺旋)

The handle of this door is kept by two screws.这扇门的把手用两枚螺丝钉固定。
I removed the last of the screws and took the back off the machine.我旋下最后一颗螺丝钉,打开了机器的后盖。