Nowadays nearly everyone, male
or female, has more opportunities
to go to college than people ______
thirty years ago.
請問為什麼是填did而不能填had呢？
前面不是has嗎？
His instructor did not approve of
_______ his fellow students during
the examination.
答案是his helping
可是這樣整句讀起來好怪哦！
這到底是考什麼的文法阿？

1. 仔細看最後面的時態是30年前 當然是過去式阿

had不是過去式嗎？

did代替had opportunities to go to college

2) 介係詞of後接名詞，所以動詞需變成動名詞形式helping既然已成名詞，前方想表示是"誰的"動作就用所有格his囉~

注意 fellow (同儕)，這個He的人與他所要幫助的對象是同儕，因此我想這個"他"也是一位學生。