respectively用于配对两组（三组）事物，表明后一组与前一组按照相同的顺序排列，从而使句意明确。一般是在句子的最后，而且在respectively的前面需要一个逗号“,”

一 、两组事物：

原则是尽可能靠近第二组的结尾。

① The physicochemical characteristics of the water and sediment samples were shown in Table 1 and Table 2, respectively. （挨着第二组）

② The top and bottom boundaries of each box indicate the 75th and 25th quartile values, respectively, and lines within each box represent the median values. （挨着第二组）

③ The relative abundances of Module 1, Module 3 and Module 4 were significantly and positively correlated with TP, aridity, and DON, respectively. （挨着第二组）

④ Taxonomic differences, which were identified using linear discriminant analysis (LDA) effect size (LEfSe) analysis, indicated that there were 80 and 94 biomarkers (P < 0.05, LDA > 2.0) in water and sediment, respectively, among the five landforms.（挨着第二组，放到了介词among的前面）

⑤ This supported the lower diversity of microorganisms in the water, although elevation and MAT respectively displayed negative and positive correlations (that were not statistically significant) with the Shannon index.（这是放中间的用法，很少见）

二 、多组事物：

如果一个句子不只有两组平行事物，respectively摆放在第二个事物的前面。

① The times until uptake of the modified, unmodified, and control antigens were respectively 1, 2, and 5 h at 31℃ and 1.5, 3, and 5 h at 40℃.（放在第一组事物的后面，第二事物的前面）

三、只有一组事物，没有对应关系。

不使用respectively。