unit 1 women of achievement 第1单元 女人的成就（重点句型）
1. only after her mother came to help her for the first few months was she allowed to begin her project. 她母亲头几个月来帮她的忙，这才使她得以开始自己的计划。
only in this way can we learn english better. 只有这样，我们才能学好英语。
only then did i remember that i had left my cell phone in the restaurant. 到那时我才记起我把手机忘在餐馆里了。
only when mum is sick will she stay in bed. 只有生病的时候妈妈才会卧床休息。
①only then how much damage had been caused.
a. she realized b. she had realized
c. had she realized d. did she realize
② by keeping down cost will power data hold its advantage over other companies.（2010·01·安徽合肥高三检测）
a.only b. just c. still d. yet
2. for forty years jane goodall has been outspoken about making the rest of the world understand and respect the life of these animals. 40年来，简·古道尔一直在呼吁世人了解并尊重这些动物的生活。
本句用的是现在完成时，即“has/have been doing”，表示从过去某个时间开始的动作或状态一直延续到现在，可能还会再进行下去。
—what have you been doing? 你一直在做什么？
—i have been practising the piano. 我一直在练习弹钢琴。
①—hi, fracy, you look tired.
—i'm tired. i the living room all day.
a. painted b. had painted
c. have been painting d. have painted
②new that she is out of a job, lucy going back to school, but she hasn’t decided yet.
a. had considered b. has been considering
c. considered d. is going to consider