that引導定語(yǔ)從句要注意以下幾點(diǎn)：

　　1、定語(yǔ)從句中缺主語(yǔ)，修飾人時(shí)用who／that，修飾物時(shí)用which／that引導。如： Is this the factory which／that makes TV sets？The man who／that visited our school is from Australia．

　　2、從句中缺賓語(yǔ)，修飾人時(shí)用who／whom／that或省略引導詞；修飾物時(shí)用which／that或省略引導詞。如：Gone are the days which／that we spent together in the village．He is the man who／whom／that I think to be worthy of our praise.