Bluebird, the car he was driving, had been specially built for him. 中副词的位置

Question

中specially 副词不是应该放在第一个助动词后面吗？When the fire had at last been put out, the forest authorities ordered several tons of a special type of grass-seed which would grow quickly. 这句话 at last 就是在had后

Answer 1

Bluebird, the car he was driving, had been specially built for him.
他驾驶的那辆蓝鸟是专门为他建造的。
这句话的句子的主要成分是：
主语：Bluebird（蓝鸟），the car he was driving（从句修饰前面的主语蓝鸟，特指他驾驶的那辆）
这个 had been specially built for him.才是主语后续的谓语+宾语结构。
另外副词的 使用方法总的规律是：实意动词前, be动词后。追问

When the fire had at last been put out, the forest authorities ordered several tons of a special type of grass-seed which would grow quickly. 这句话 at last 就是在had后

Answer 2

副词在句中的位置规律：

1. 一般副词的位置
在许多情况下，副词都放在所修饰的动词后面或句末。如：
The girl dances very well. 这个女孩跳舞跳得好。
有时也放在主语后面，谓语动词前面(对动作加以强调)。如：
He angrily closed the door. 他生气地把门关上了。
置于句中的副词，若碰上助动词，则通常放在助动词之后、主要动词之前：
He has just left for work. 他刚刚离开去上班。
We have already read the book. 我们都已读过这本书。
2. 频度副词在句中的位置
频度副词表示动作发生的次数，常见的有ever, never, seldom, sometimes, often, always 等，它们通常位于实意动词之前，动词 be、助动词、情态动词之后。如：
He never reads such books. 他从不看那样的书。
He often comes to school late. / He is often late for school. 他上学常迟到。
有时为了强调，频度副词也可位于动词 be、助动词等之前：
She always was late. 她老是迟到。
为了强调等原因，有时频度副词可位于句首或句末(尤其受 very, only修饰时)：
Very often the phone rings when I’m in the bath. 电话经常在我洗澡时响起。
Do you go to the cinema very often? 你常去看电影吗?
频度副词 always 和 never 通常不位于句首，除非是祈使句：
Always remember this. 请时刻记住这一点。
Never tell him the news. 千万不要告诉他这消息。
在否定句中，有的频度副词可位于否定词not之后或之前(如usually, often)，有的频度副词则必须位于否定词之后(如 always)，而有的频度副词必须要位于否定词 not 之前(如 sometimes)：
He doesn’t usually come here. / He usually doesn’t come here. 他通常不来这儿。
She doesn’t always come late. 她并非总是迟到。(不能说 always doesn’t)
He is sometimes not satisfied with my work. 他有时对我的工作不满意。

Answer 3

本句的副词specially是修饰谓语中的过去分词的，所以可以直接放在过去分词前面。而at last 作为时间状语则位置比较灵话，放在句首句中句尾皆可。一般来说频度副词如hardly，never类要放在第一个助动词后面，其他副词则并非 非如此

Answer 4

这里specially既可以放在built前也可以放在built后，放在前面主要是更进一步强调built,"特别制造的", 如果放置在built后面，则强调的是him,"特别为他".