1 應(yīng)該是否定前移,正確的是：
I don't think he works hard.
2 need 作情態(tài)動(dòng)詞后接動(dòng)詞原形,一般用于否定句和疑問(wèn)句； 作實(shí)義動(dòng)詞時(shí),主語(yǔ)是人是need to do sth
主語(yǔ)是物時(shí) need doing / to be done
如
You need to wear cool clothes.
Your shoes are dirty ,they need washing .
You shoes are dirty ,they need to be washed .我記得有一道題是這樣的。 Need i-------這是實(shí)義動(dòng)詞還是情態(tài)動(dòng)詞？我該怎么回答？實(shí)義動(dòng)詞的意思是需要 ，那么情態(tài)動(dòng)詞呢？怎么區(qū)分Need I... 中的need 是情態(tài)動(dòng)詞


請(qǐng)認(rèn)真看我前面的例子。那么need有三單和過(guò)去時(shí)形式嗎作為實(shí)義動(dòng)詞時(shí)有，如He nees to wear a pair of new shoes.

作為情態(tài)動(dòng)詞時(shí)不受人稱和數(shù)的影響