介绍:
1.a pat on the back
Marry did a great job on this project , and he got a pat on the back from his boss.
名词短语，表示受到表扬。pat轻拍。
前面常用动词：
Give sb a pat on the back表扬赞赏鼓励某人
Deserve a pat on the back值得表扬，应得的
Get a pat on the back收到表扬赞赏
His boss gave him a pat on tje back for his success in this project.
2.squander表示浪费时间，金钱，机会等。也可以用waste
He squandered the opportunity to go to college.
squander. ...on 把时间金钱等资源花费在...上
他把所有的时间和金钱都花在车上了
he squandered all his time and money on his car
squander&waste&lavish都表示浪费waste中性词，squander贬义词，强调荒废，lavish则是有大度，慷慨的意思，褒义词。
3.pile into /onto something
a pile of books一堆书
pile in to /onto something一窝蜂地挤进某个空间里。常常指车子里
Those highschoold kids pile onto the school bus. 这些高中生一窝蜂的挤进校车里。
过万名粉丝一窝蜂地挤进体育馆看决赛
Over ten thousand fans piled into the stadium to watch the final.
4.acquaintance
aquaitance of，make a/the aquaitance of，make one's aquaitance，have a aquaitance with sb.表示结识某人，还可以表示泛泛之交。
a nodding/passing acquaitance表示点头之交。
Mary:Kate is getting transfered to another deppartment, and we are all chipping in to buy her a going-away present.Are you in?
Edward:We’re only passing acquaintances. What’s in it for me.（我有什么好处吗）
我们只是泛泛之交，算不上朋友，大家表达下
we are only a nodding acquaintance，not real friend.
老师：
We’re only passing acquaintances,scarcely friend./not friends。
i have many acquaintances表示某个领域有熟人
have large acquaintances交友广泛
4.pick up the slack
pick up the slack /takeup the slack接手别人留下或不愿意做的工作
pick up phone/sb.接电话/某人Ellen的同事Marry突然离职了，她不得不加班接手她的工作。
quit辞职不干，colleague, coworker同事
elln's colleague marry quited.she has to overwork to pick up the slack.
quit one's job离职
work overtime加班
quit/quitted都行，都是过去式Ellen’s coworker Marry quit and she had to work overtime to pick up the slack.
5.draw someone out&draw something out.
draw someone out鼓励某人说话或表达
draw something out 使得某事拖的比平常要久
He is such a shy guy.It’s hard to draw him out
He drew the meeting out over 2hours.
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