it was not until when...與it was not until that...區別,強調句型用哪個.

題目：

it was not until when...與it was not until that...區別,強調句型用哪個.

解答：

it was not until that..
「It is / was not until … that …」.譯作「直到…才…」,它是「not … until …」的專用強調句型.如 It was not until she arrived in class that she realized she had forgotten her book.
再問： 什麼時候用when
再答： 強調句的引導詞沒有加when的，但是，在被強調部分倒是有。比如 It was when I came into the room that he started to cry. 是當我走進房間的時候他才哭的。