1.whistle用作名词时意思是“口哨”,转化为动词时意思是“吹口哨”“吹(笛等)”“鸣笛”,引申可表示“呼啸着前进”。与介词for连用还可表示“空指望”“指望”。
2.whistle可用作及物动词,也可用作不及物动词。用作及物动词时,接名词或代词作宾语。还可接以动词不定式充当补足语的复合宾语。

whistle for(v.+prep.)
1.〈非正〉空想 want sth without getting it
〔说明〕 whistle for不用于进行体。
▲whistle for sth
I'm not prepared to use any firm's money to pay this man, let him whistle for his money!我不想用商行的任何钱付给这个人,让他做他的美梦吧!
She didn't even thank us for helping her, so the next time she needs help she can only whistle for it.对于我们的帮助她连谢都不谢,下次别指望我们再帮她了。
2.用口哨召唤 call sb by whistling
▲whistle for sth
John whistled for a taxi.约翰用口哨召唤出租汽车。
▲whistle for sth to-v
The policeman whistled for the motorcar to stop.警察吹警笛让汽车停下来。

whistle in the dark(v.+prep.+n.)
〈非正〉在危险、威胁等面前假装无所畏惧 pretend fearlessness in the face of danger, threat, etc.
〔说明〕 whistle in the dark常用于进行体。
She says that she's not afraid of losing her job because of what she did, but I think she's just whistling in the dark.她说她不怕因所干的事而失业,不过依我看她不过是说大话罢了。

whistle through(v.+prep.)
呼啸穿过 move with a whistling sound
▲whistle through sth
The wind whistled through the eaves.风呼啸着穿过屋脊。

whistle to(v.+prep.)
对…吹口哨〔吹奏〕 produce by whistling toward sb
▲whistle to sb
He whistled to his dog and it came running.他吹口哨唤狗,狗跑了过来。
▲whistle sth to sb
He whistled a foreign tune to us.他为我们吹奏了一首外国曲调。

whistle up(v.+adv.)
▲whistle sb/sth⇔up
1.用口哨召唤 call sb by whistling
He whistled a waiter up to their table.他吹口哨让服务员到他们的桌子这边来。
He whistled up his dog.他用口哨召唤他的狗回来。
If we're all ready,I'll just whistle up the dogs and then we can go.如果我们都准备妥当,我就吹口哨把狗唤来,而后就出发。
2.召来,呼吁 call on (sb)
The commander has whistled up reinforcements.指挥官召来了增援部队。
They tried to whistle up some help.他们想通过呼吁获得一些支援。
3.〈非正〉从有限或艰难的材料中搞出 make sth from poor or scarce materials
〔说明〕 whistle up常不用于进行体。
Life's not easy for a good teacher, having to whistle up new ideas for lessons every day.对于一个好老师来说生活并非容易,他每天都必须探索,寻求新的见解来讲授课程。

用作不及物动词
▲S+～(+A)
Can you whistle?你会吹口哨吗?
Who whistled just now?刚才谁吹口哨了?
The boy was whistling while he was working.那男孩一边干活,一边吹着口哨。
He came home for dinner whistling cheerfully.他欢快地吹着口哨回家吃饭。
He whistled happily as he rode along on his bike.当他骑着自行车行进时,他快活地吹着口哨。
The boy was whistling away merrily.那男孩愉快地吹着口哨离开了。
The train whistled and steamed off.火车鸣笛开走了。
The driver whistled before reaching the level-crossing.司机在抵达交叉口之前先鸣汽笛。
The cold wind whistled past.寒风嘘嘘吹过。
Another bullet whistled by.又一颗子弹呼啸而过。
The bomb whistled down.炸弹发出嘘嘘声落下来。
用作及物动词
▲S+～+n./pron.
The boy whistled a happy tune.那孩子用口哨吹奏愉快的曲调。
The referee whistled the end of the match.裁判员吹哨子宣布比赛结束。
Whistling the merry tune,Jack fixed the tyre.杰克一边吹着欢乐的小调,一边装着轮胎。
Six students in our class whistled a chorus.我们班有六位同学用口哨合吹了一首曲子。
The musician is whistling a tune merrily.那乐师愉快地吹奏着一支歌曲。
They whistled arrows at us.他们把箭嗖嗖地向我们射来。
用作宾补动词
▲S+～+n./pron.+to-v
The policeman whistled Henry to stop.警察吹警笛叫亨利停下来。
He whistled his hounds to come back.他吹口哨让猎狗回来。

The referee blew a whistle at the end of the game.裁判在比赛结束时吹响了哨子。
We heard the whistle of a train. 我们听到了火车的汽笛声。