Question

这里的that前面为什么可以有逗号？一个只能有一个谓语 这个句子有am have made

will be？谁能帮我解释一下 谢谢
and i am sure ,from the fine record you have made thus far, that you will be a success in whatever you undertake

Answer 1

and i am sure ,from the fine record you have made thus far, that you will be a success in whatever you undertake.
把句子顺序换一下：
And from the fine record （you have made thus far定语从句）状语, I主 am sure谓 【that you will be a success in （whatever you undertake宾语从句) 宾语从句】.
from...介词短语作状语，状语在句子中间时，一般前后加逗号。
record后面有一个定语从句。
有从句就有谓语。
三个从句的谓语：have made/will be/undertake
译：从你迄今为止取得的良好成绩来看，我相信无论你从事什么工作，你都会取得成功

Answer 2

这个句子是一个复合句。中间还有一个插入语，因此，这里有个逗号。这个复合句子中有三个谓语是可以理解的。

Answer 3

句子主干是And I'm sure that you will be a success in whatever you take.，中间的from the fine record you have made thus far是插入语，作为独立结构前后需各加一个逗号隔开。