你記住這個(gè)就可以,lack既可以是動(dòng)詞,也可以是名詞.
動(dòng)詞時(shí),為及物的,所以直接加名詞,就是 lack+ sth...就是缺乏什么什么.
They lack money.
名詞時(shí),一般用這個(gè)詞組 a lack of sth.意思也是缺什么.
eg.There is a lack of water in that city.
lacking 是一個(gè)形容詞,用法為 lacking in sth..
既然是形容詞,就是需要它前面加系動(dòng)詞才可以用,或者直接用一個(gè)短語(yǔ).
eg. He got refused because of being lacking in experience.
同一個(gè)意思的句子用這三個(gè)形式我在給你舉個(gè)例子：
他缺乏經(jīng)驗(yàn).
He lacks experience.
He has a lack of experience.
He is lacking in experience.