There are much bigger contributors to our weight and a lot of it is genetic.
介词+句子???
a lot of it is genetic. 体重的很多因素是遗传的。
这句话没有错。it 指代 weight (体重),a lot 是代词,作句子主语,of it 作定语。
当 a lot of 后面有代词,例如 a lot of it, a lot of us, a lot of them,这时,a lot 是代词,of 作定语。举例:
A lot of us like football.
只有a lot of 后面跟名词,而且名词没有冠词时,它才是定语。比较:
A lot of water is wasted.(a lot of 作定语, a lot of = much)
A lot of the water is wasted.(a lot 是代词,of the water 作定语)
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