張貼日期：Sep 20, 2010 8:31:17 AM
只有一個 have 時,則 have 當動詞用,代表
"有" : 例如 I have a book. I have a pen.
"吃" : 例如 I had lunch two hours ago.
二個have時,前面一個have當助動詞用表示完成式
have had 是現在完成式表示至今已發生的事:
例 I have had a computer since I graduated from junior hight school.
had had 過去完成式表示比過去某個時間點更早發生的事使用上必定會出現一句過去式子句當做基準時間
例 I had had breakfast before I went to school.