语法对PTE题型summarize written text和essay的分数影响之大不言而喻。做summarize written text的时候语法在这个时候就像打卡保险箱的一把钥匙，它能够在你看不懂文章的时候找到文章的主旨在哪里。
常见的“部分倒装”有以下几种情况。
1.“so+助动词+主语”倒装
当要表示前面提出的某一肯定的情况也同样适合于后者，通常就要用“So+助动词+主语”这种倒装结构：
You are young and so am I. 你年轻，我也年轻。
She likes music and so do I. 她喜欢音乐，我也喜欢。
If he can do it, so can I. 要是他能做此事，我也能。
【注意】
(1) 若前面提出某一否定的情况，要表示后者也属于同样的否定情况，则应将其中的so改为neither或nor：
You aren’t young and neither am I. 你不年轻，我也不年轻。
She hasn’t read it and nor have I. 她没有读它，我也没有读。
(2) 注意该结构与表示强调或同意的“so+主语+特殊动词”结构的区别：
"It was cold yesterday." "So it was." “昨天很冷。”“的确很冷。”
"Father, you promised." "Well, so I did." “爸爸，你答应过的。”“嗯，是答应过。”
2. 否定副词位于句首时
在正式文体中，never, seldom, rarely, little, hardly, scarcely, no sooner, no longer, nowhere 等含有否定意义的副词若位于句首，则其后要用部分倒装：
I shall never forgive him. / Never shall I forgive him. 我永远不会宽恕他。
He seldom goes out for dinner. / Seldom does he go out for dinner. 他很少出去吃饭。
She hardly has time to listen to music. / Hardly does she have time to listen to music. 她几乎没时间听音乐。
He little realizes how important this meeting is. / Little does he realize how important this meeting is. 他不甚明白这个会议的重要性。
We had no sooner reached the airport than the plane took off. / No sooner had we reached the airport than the plane took off. 我们刚到机场,飞机就起飞了。
【注意】
(1) 对于not…until句型，当not until…位于句首时，其后的主句要用倒装语序：
He didn’t leave the room until the rain stopped. / Not until the rain stopped did he leave the room. 雨停了之后他才离开这房间。
(2) 某些起副词作用的介词短语，由于含有否定词，若位于句首，其后要用部分倒装：
On no accounts must this switch be touched. 这个开关是绝不能触摸的。
In [Under] no circumstances will I lend money to him.无论如何我也不会再借钱给他了。
但是，in no time(立即，马上)位于句首时，其后无需用倒装语序：
In no time he worked out the problem. 他马上就算出了那道题。
3.“only+状语”位于句首时
当一个状语受副词only的修饰且置于句首时，其后用部分倒装语序：
Only then did he realize that he was wrong. 到那时他才意识到他错了。
Only in this way are you able to do it well. 你只有用这种方法才能把它做好。
Only when he returned home did he realize what had happened. 当他回到家里时，才知道出了什么事。
涉及only的倒装及考题分析
按英语习惯同，当“only+状语”位于句首时，其后句子要用部分倒装。如：
Only then did he realize that he was wrong. 到那时他才意识到他错了。
Only in this way are you able to do it well. 你只有用这种方法才能把它做好。
Only in this way can our honour be saved. 只有这样，才能保住我们的荣誉。
Only then did I understand what she meant. 只有到那时我才明白她的意思。
Only after her death was I able to appreciate her. 只有到她死后我才认识到她的价值。
Only when he returned home did he realize what had happened. 当他回到家里时,才知道出了什么事。
Only in this way can we learn English. 只有这样才能学会英语。
The pilot reassured the passengers. Only then did I realize how dangerous the situation had been. 飞机驾驶员要乘客们放心，这时我才明白刚才的情况有多危险。
Only by shouting was he able to make himself heard. 他只有叫喊才能让别人听到他。
Only when we landed did we see how badly the plane had been damaged. 我们只是在着陆之后才看到飞机损坏的严重程度。
Only on one point do I agree with you. 只有一点，我同意你的说法。
【典型考题】(答案分别为D, C)
1. Only then _________ how much damage had been caused.
A. she realized B. she had realized
C. had she realized D. did she realize
2. Only after my friend came _________.
A. did the computer repaired B. be repaired the computer
C. was the computer repaired D. the computer was repaired
特别说明：有时命题者不是利用位于句首的“only+状语”来考查倒装，而是倒过来，利用给定的倒装结构来考查对only的选择。
如下面一题(答案选A)：
_________ by keeping down costs will Power Data hold its advantage over other companies.
A. Only B. Just C. Still D. Yet
4. 由not only…but also引出的倒装
当句型“not only…but also“中not only位于句首引出句子时，not only 后的句子通常用部分倒装形式：
Not only is he a teacher, but he is also a poet. 他不仅是一位教师，而且是一位诗人。
Not only did he speak more correctly, but he spoke more easily. 不仅他讲得更正确，也讲得更不费劲了。
5. 虚拟条件句的省略与倒装
当if引导的虚拟条件从句中含有had, were, should等时，如将if省略，则要将had, were, should等移到主语前，构成倒装句：
Had you come yesterday, you would have seen him.若你昨天来，你就会见到他了。
Should you require anything give me a ring. 如果需要什么，可以给我打电话。
Were it not for your help, I would still be homeless. 要不是你帮助，我会仍然无家可归。
【注意】省略if后提前的had不一定是助动词：
Had I money, I would buy it. 假若我有钱，我就会买它。
6.“so+adj. / adv.”位于句首时
副词so后接形容词或副词位于句首时，其后用部分倒装：
So cold was the weather that we had to stay at home. 天气太冷，我们只好呆在家里。
So fast does light travel that we can hardly imagine its speed. 光速很快，我们几乎没法想像它的速度。
So sudden was the attack that we had no time to escape. 袭击来得非常突然，我们来不及逃跑。
以上就是关于PTE写作的相关资讯，如果你想了解更多PTE的相关课程，留学规划或者有任何疑问，欢迎联系新航道重庆学校。
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