一　定義：
A 有些動(dòng)詞只是及物動(dòng)詞; 它們不可以單獨(dú)用,后面必須跟賓語(yǔ).
{ False:They always want after lunch.
Right:They always want a cup of tea after lunch.
{ False:He is sending now.
Right:He is sending a letter now.
B 有些動(dòng)詞只是不及物動(dòng)詞；它們可以單獨(dú)用,如果后面想接賓語(yǔ),動(dòng)詞后面必須加上介詞.
{ Right:He is looking around.
False:He is looking me.
Right:He is looking at me.
{ Right:He is listening carefully.
False:He is listening the teacher carefully.
Right:He is listening to the teacher carefully.
C 有些動(dòng)詞既是及物動(dòng)詞,又是不及物動(dòng)詞; 但是有時(shí)候詞義會(huì)改變.
{ The customer is asking loudly.
The customer is asking for you now.
The customer is asking a question now.
{ If you work hard,you will succeed.
If you work hard,you will succeed in passing the exam (same meaning).
If you work hard,you will succeed John as the manager of this company (different meaning).
二　動(dòng)詞使用的建議：
當(dāng)使用動(dòng)詞時(shí),一定要分清楚這個(gè)動(dòng)詞屬于哪一類 [動(dòng)詞分類],然后再根據(jù)不同的使用規(guī)則使用不同動(dòng)詞.