(用关系代词 who，which 或 that 将句子连成一个定语从句) This is my brother．He lives in Australia．

(用关系代词 who，which 或 that 将句子连成一个定语从句) I saw a flat．  It was damaged by the typhoon．

(用关系代词 who，which 或 that 将句子连成一个定语从句) I work for a hank. It is based in China．

(用关系代词 who，which 或 that 将句子连成一个定语从句) We are watching a typhoon．It is approaching the coast．

(用关系代词 who，which 或 that 将句子连成一个定语从句) I won't buy bananas．They aren't ripe．