[請益] 一個since的句子和時態

[takumixnobu (Mediterranean Homesick)]

But at the movement’s root is a dramatic shift in identity since Britain pull
ed out in 1997 that has left a majority of Leung’s generation rejecting ties
to mainland China and asserting what they see as their own distinct and entire
ly separate identity.

很長有點高拐的句子但是這裡since做為連接詞表達“自從”意思時，開頭的子句不需要
使用完成式嗎？

--
※ 發信站: 批踢踢實業坊(ptt.cc), 來自: 147.41.128.10 (澳大利亞)
※ 文章網址: https://www.ptt.cc/bbs/Eng-Class/M.1565921501.A.2F0.html
※ 編輯: takumixnobu (147.41.128.10 澳大利亞), 08/16/2019 10:12:35
推 wohtp: 誰說since後面必須接完成式的？沒這回事。