In the early 1900's, Albert Einstein showed _____, under special circumstances, matter and energy can be converted into one another.
(A) in which
(B) that
(C) what
(D) there are
我的疑問是:
我一直對這種在文法題目裡,莫名其妙就有逗點的句子感到疑惑,像這句為何 that 後面可以接逗點呢?
之前上美加袁允貞老師的課時,她曾說過對於這種前後有逗點的句子都可視為〝同位格〞,可省略不看...
所以 , Albert Einstein showed that, 也算同位格嗎?