有關英文連接詞的問題?

The connective that can compare multiple things are:-
(1)This cannot compare with that, no comparison is possible because they are a little different:-
eg:-C's 96, B's(Not A's) 99 cannot compare with that of A's 100 in scores.
(2)In use of comparison of A's score 100, to another B's(Not A's) score 99, and to another C's score 96 is like using an interesting Simile.
(3)A's score is 100, while that of B (Not A) is 99, and while that of C(Not B) is 96.
eg:-while that of-------and while that of can be judged to that extent of three things, scores, similar or not similar.

while子句置於主要子句後時，可以表示「對照」的關係：另一方面。
He likes sports, while I like books.=他喜歡運動，然而我喜歡看書。

A's score is 100, while B's is 99 and C's 96.
是正確的寫法。

你的句子所發生的錯誤是A, B, C的寫法不一致，你不應該把B's score換作了that of B。

ex.A考100分，而B C 分別考了99 96分

Ex. A's score is 100, while those of B and C are 99 and 96 separately.

用while that of 來比較多於二個事物例句(還是要分成二組來比)

The percentage of (wages and salaries) as a share of national income diminished from 26.7 percent in 1980 to 14 percent in 1989, while that of (profits, rents and interests) increased from 50 percent in 1980 to 71 percent in 1989.

A scored 100, while B and C scored 99 and 96 respectively.

可以請教英文老師喔~~