1、has用于一般現(xiàn)在時(shí),還有就是說明一般的普遍或者經(jīng)常性的情況。
She has become a lot more tolerant and communicative.
她變得寬容多了,也愛說話了。
He has fooled a lot of people into believing he is a rich man.
他騙了許多人,讓人相信他是個(gè)富翁。
2、has只在單數(shù)第三人稱(he,she,it)或者主語是單個(gè)物體時(shí)使用。
Beauty is an attitude. It has nothing to do with age.
美是一種態(tài)度,與年齡無關(guān)。
My husband has several shirts of different colors.
我丈夫有好幾件顏色不同的襯衫。
3、had則用在一般過去時(shí),過去完成時(shí)。
He had an operation last year to widen a heart artery
去年他接受了一個(gè)擴(kuò)張心臟動脈的手術(shù)。
He had our friend's cap!
他拿了我們朋友的`帽子!
4、had的使用范圍比較廣泛,在過去時(shí)中,任意人稱都是had。
I had a coke in the mini-bar.
我拿了一瓶小吧柜中的可樂。
Have you had some training related to telesales in your past years?
在過去的幾年中,你接受過電話銷售的相關(guān)培訓(xùn)嗎?