Have had to意思
"have had to" 是英語中一個常用的時態結構,用於表達過去到現在一直存在的某種情況或責任。這個結構通常用來描述某人不得不做某事,或者被迫做某事的情況。
例如:
- I have had to work extra hours to meet the deadline. (我不得不加班以趕上截止日期。)
- She has had to take care of her sick mother. (她不得不照顧她生病的母親。)
- They have had to cancel the party due to the bad weather. (由於糟糕的天氣,他們不得不取消了聚會。)
在這個結構中,"have" 是助動詞,"had" 是過去分詞,"to" 是動詞不定式的標誌,後面跟的是動詞原形。這個結構通常用來強調動作的持續性或者必要性,表明這個動作是從過去某個時間開始,一直持續到現在,或者是對現在有影響的。