💡動詞：
及物動詞 ➡ lack + N
He lacks working experience .
She lacks confidence when she speaks English.
不及物動詞➡ lack for + N (少數否定語氣情況）
She does not lack for confidence when speaking English.
He does not lack for working experience .
We lack for nothing.
Fools never lack for courage.
💡名詞：
名詞 ➡ [ lack of + N ]
Lack of practical experience is a problem among our new recruits.
He has a lack of experience.
She shows a lack of confidence when she speaks English.
She shows no lack of confidence when she speaks English.
💡形容詞：
形容詞➡ be+ lacking in + N
He is lacking in practical experience.
She is lacking in confidence when she speaks English .
形容詞 ➡ be + lacking
Practical experience is lacking among our new recruits.
When she speaks English, her confidence is lacking.
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