1.in turn相反     

in return      作为回报

I tried to do a good deed, but this is what I got in return,

  by turns=one after the other  

take turn to do sth.轮流做某事

  turn secretary=become a secretary  

  turn to sb ( for help )               turn up=appear   

turn out=prove to be / produce

  turn down 拒绝=refuse；音量调低 ；向下翻；

2. If she spent five years in Paris, how come she can't speak a word of French?

她假若在巴黎呆了五年，怎麽一句法语都不会说呢？

  come across 越过某处；被理解；偶然发现,　偶然遇到

  come into being／existence　出现，开始形成，建立 

come into use／service 开始使用 （无被动）

come out 出来; 出发；出版；名列…；（总数等）达到（+ at/to）

come to light 泄露（真相）；被发现

cf. Your statement does not throw light on the subject.  并没有说明问题

  come true实现，变成现实 My dream has come true. 我的一个梦想实现了。

Cf. realize one’s dream           reach one’s goal     turn sth into reality

come up 升起；走进；种子生长发育； 被提出   

come up with an idea（突然）想出办法

3. go all out to do sth 全力以赴去做某事 =try one’ best to…=do what / all one can to…

go beyond 超出；超出…的能力  go beyond one’s ability / imagination / control

go in for参与，参与（竞赛等）；从事（某项工作）；爱好，酷爱

go out (火)熄灭,过时了

cf. put out the fire（灭火）   put off 推迟, 延期( put off the meeting )；

put down the rebellion(镇压)