Simone问题补充说明：答案简单些 ， 谢谢 ！！！！！！
代表物时多用which，但在带有下列词的句子中用that而不用which，这些词包括当先行词是anything,everything,nothing,none等不定代词时，或者是由every,any,all,some,no,little,few,much等修饰时等，这时的that常被省略还有先行词前有序数词或形容词最高级修饰时,或先行词就是序数词或最高级时.以及先行词中既烈有人又有物时.还有句中前面有which时,都只能用that
a)在不定代词，如：anything,no县之究宁今角杀thing,everythi来自ng,all,much,few360问答,any,little等作先行词时，只用that，不用which。
Al右翻施测良lthatisneededisasupplyofoil.
Finally,thethiefhandedeverythi研子神教待技交海况黄ngthathehadstolentothepolice.
b)先行词有theonly,thevery,thejust修饰时，只用that。
Heistheverymanthathelpedthegirloutofthewater.
c)先行词为序数词(the白走数委督保last)、数词、形容词最高级时，只用that。
Thef总irstEnglishbookthatIreadwas"ThePrinceandthePauper"byMarkTwin.
d)先行词既有人，又有物时。
Heta济架lkedabouttheteachersandschoolsthathevisited.
e)当主句是以who或which开始的特殊疑问句时，用that以避免重复。
Whoistheperso角叫难弦著也使肉识显钟nthatisstanding零给越积无脱教站atthegate.
f)关系代词在从句中做表语
Heisnotthem可愿义搞胜模镇威定斤anthatheusedtobe.
