121.It could be that the high一unctioning mothers En the study had already had a strong influence on (heir children's speech development, Ms.Pancsofar said，"or it may be that mothers are contributing in a way we didn’t measure in the study."
本句的主干是Ms. Pancsofar said。之前的内容是间接引语，为said的宾语，其中that引导的是表语从句;引号之中为直接引语，也是said的宾语，其中that引导的也是表语从句，该表语从句中we didn't measure in the study是way的定语从句。
have an influence on的意思是“对……产生影响”。如:
This novel had a major influence on the youth.
如:As a writer, she always measures her words.
The truth is that I have bought the house with all of my savings.
It seems that we have known each other for decades.
※ 从属连词whether, as, as if，即主语+系动词+whether/as/ as if以句。如:
You looked just as you had looked in high school.
The point is whether they will accept our offer.
※ 连接代词who, whom, whose, what, which, whoever, whatever和whichever，以及连接副词where, when, how和why。如:
The question is when and where we will meet.
That was what he told me.