NO.1:theirs是名词性物主代词,相当于名词,因此后面不能直接加名词,their是形容词性物主代词,相当于形容词,可以直接接weight.
NO.2:traveling in wave form as it goes from one place to another整个可以看成一个名词短语,因此类似于NO.1,用its
NO.3:这句话mother是主语,Marry and me在剧中做宾语成分,因此I要用宾格形势me
NO.1:theirs是名词性物主代词,相当于名词,因此后面不能直接加名词,their是形容词性物主代词,相当于形容词,可以直接接weight.
NO.2:traveling in wave form as it goes from one place to another整个可以看成一个名词短语,因此类似于NO.1,用its
NO.3:这句话mother是主语,Marry and me在剧中做宾语成分,因此I要用宾格形势me