第1个回答 2018-01-10
sister这个单词,只有在文章里,根据上下文的意思,或者根据句子的意思,就能判断出是姐姐还是妹妹的意思。如:I was born in 1990, My sister was born in 1998, 在这个句子里,sister一定表示妹妹的意思。如:I is 3 years younger than my sister.在这个句子里,sister一定表示姐姐的意思。以上句子改为下面形式,I was born in 1998, My sister was born in 1990,这里sister表示姐姐的意思。 My sister is 3 years younger than I,这里sister表示妹妹的意思
.如果一定要表示姐姐,哥哥,就得在sister,brother前面加elder,就用elder sister, elder brother.