必修4 Unit 1 Women of achievement
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+状语”放在句首时，主句部分要用部分倒装，即：将助动词、情态动词或连系动词置于主语之前。但“only+主语”放在句首时，主句不倒装。
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。
例题：
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.
A. Only B. Just C. Still D. Yet
①解析：选D。“only+状语”放在句首时，主句部分要用部分倒装，再根据时间then判断，主句应用一般过去时，所以选D。
②解析：选A。四个选项中，只有“only+状语”放在句首时，主句才用部分倒装。
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。
例题：
New 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
解析：选B。句意为：露西现在没有工作，她在考虑回学校，但她依然没有做决定。表示过去开始的动作一直持续进行到现在，用现在完成进行时。
