Mrs.Green asks him“what are you donging here?What are you lo

正确 That's the reason why they are doing now.那是他们为什么现在正在做的原因.定语从句,先行词the reason,引导词是why

这个就不用深追究了,把明显的句子类型,句子成分弄明白就可以了,起码高考时不会要求这些的,这种结构记下来就好了,毕竟不是很多,祝好运.

emember to do 是记得要去做某事 doing是记得做过某事

---2,miss-missing-missed
---3,happen -happening-happened
---4,stealing-stole
---5,shutting-shutted
---6,finishing-finished
---7,calling-called
这就是现在分词
1、以重读闭音节结尾,末尾只有一个辅音字母的双写该辅音字母,再加ing.
例如running（run是重读音节,且只有一个辅音字母n结尾）
类似还有putting,sitting
2、以-al,-er,-ill结尾的动词,即使重音不在最后一个音节上,也要双写,再加-ing 如：travelling;
3、lie加-ing时,要把ie改为y,写成lying

你正在做什么?

e busy with sth.spend on sth.be busy doing sth.spend doing sth.keep on dong sth mind doing sth.介意干某事 keep doing sth.mind not doing sth.介意不干某事 have money to do sth./have money for sth.有钱做某事 make sb.do sth.使某人做某事 do sth.help sb.to do sth.帮助某人做某事 with ask sb.about sth.问某事关于某人 say sth.to sb.对某人说某事 ask sb.for help 向某人求援 show sb.Sth.lend sb sth.show sth.to sb.lend sth to sth.give sth.to sb.talk to sb.对某人说话 give sb.Sth.talk with sb.和某人说话 need to do sth.需要做某事 （主语是物） need doing sth.需要做某事 （主语是人） to do sth.start doing sth 开始干某事 forget doing sth.start to do sth stop to do sth.停下来接着干某事 stop doing sth.停止干某事 remember doing sth.记得干过某事 remember to do sth.记住要干某事 try to do sth.尽力去做某事 try doing sth.试着去做某事 go on to do sth 做完一件事后,继续作另一件 go on doing sth 继续做某件事 ask sb.to do sth.叫某人做某事 ask sb.not to do sth.叫某人不做某事 want sb.to do sth.想让某人做某事 want sb.not to do sth.不想让某人做某事 tell sb.to do sth.告诉某人做某事 plan to do sth.计划做某事 decide to do sth.决定做某事 used to do sth.过去常常干某事 get sb.to do sth.让某人做某事 would you like to do sth.愿意做某事 can’t wait to do sth.迫不及待地做某事 have fun doing sth.做某事很有趣 enjoy doing sth.做某事很享受 mind doing sth.介意做某事 practice doing sth.练习做某事 finish doing sth.完成做某事 感官动词后接不带to的动词不定式,强调所看到的事情的发生过程,感官动词后接现在分词,强调事情正在发生.

1 I don't know.我不知道.（你认为呢?）
2 Shall我们去爬山好吗?
3 Ok!好/ Great.太好了/ Good idea好主意
4 When and where 我们什么时候在哪里见面?
5 Good idea ./ OK.好主意/ 好