为什么这个句子变It做形式主语的时候doing要改为to？ 是不是所有用it 做形式主语的句子他们的真实主语都在后面？变...
\u4e3a\u4ec0\u4e48it\u505a\u5f62\u5f0f\u4e3b\u8bed\u65f6\u6709\u65f6doing\u6709\u65f6to do\u6709\u4ec0\u4e48\u672c\u8d28\u4e0a\u7684\u533a\u522b\u4e0d\u5b9a\u5f0f\u505a\u4e3b\u8bed\u65f6\u5e38\u7528it
\u505a\u5f62\u5f0f\u4e3b\u8bed\uff0c\u800cdoing
\u5e38\u76f4\u63a5\u505a\u4e3b\u8bed\u3002\u53ea\u6709\u51e0\u4e2a\u56fa\u5b9a\u7684\u53e5\u578b\u7528it\u505a\u5f62\u5f0f\u4e3b\u8bed\u3002\u6bd4\u5982\uff1a
it
is
no
use
doing
something.
\u7b49\u3002\u6211\u7684\u56de\u7b54\u4f60\u80fd\u660e\u767d\u5417\uff1f
\u662f\u7684
it \u4f5c\u5f62\u5f0f\u4e3b\u8bed\uff0c\u4e3b\u8981\u5206\u4e3a\u4e0b\u5217\u4e09\u79cd\u60c5\u51b5\uff1a\u4e0d\u5b9a\u5f0f\u4f5c\u4e3b\u8bed\u3001\u52a8\u540d\u8bcd\u4f5c\u4e3b\u8bed \u548c \u540d\u8bcd\u4ece\u53e5\u4f5c\u4e3b\u8bed\u3002\u5177\u4f53\u5206\u6790\u5982\u4e0b
\u4e0d\u5b9a\u5f0f\u4f5c\u771f\u6b63\u4e3b\u8bed
\u4e3b\u8981\u7528\u4e8e\u4e0b\u5217\u53e5\u578b\uff1a
\u2488It + is/was + adj./n. (\u5f62\u5bb9\u8bcd\u6216\u540d\u8bcd\uff09 +to do sth.
A. \u540d\u8bcd\u4f5c\u8868\u8bed\u3002\u4e3b\u8981\u6709a pity,a pleasure,an idea\u7b49\u3002\u4f8b\u5982\uff1a
In fact________is a hard job for the police to keep order in an important football match. \uff082001\u4e0a\u6d77\u9ad8\u8003\u9898\uff09
A. this B. that
C. there D. it \uff08\u7b54\u6848\u4e3aD)
\u52a8\u540d\u8bcd\u4f5c\u771f\u6b63\u4e3b\u8bed
\u7528\u4e8e\u8fd9\u79cd\u5f62\u5f0f\u7684\u662f\u4e00\u4e9b\u7279\u5b9a\u7684\u5f62\u5bb9\u8bcd\u548c\u540d\u8bcd\u3002\u4f8b\u5982\uff1a
It was nice meeting you. \u89c1\u5230\u4f60\u771f\u9ad8\u5174! \uff08\u5206\u522b\u65f6\u7528\uff09
\u5b83\u4e0e\u4e0d\u5b9a\u5f0f\u4f5c\u771f\u6b63\u4e3b\u8bed\u7684\u533a\u522b\u5728\u4e8e\uff0c\u52a8\u540d\u8bcd\u8bf4\u5230\u7684\u52a8\u4f5c\u5df2\u7ecf\u53d1\u751f\u3002\u4f8b\u5982\uff1a
It is nice to meet you. \uff08\u521a\u521a\u89c1\u9762\u65f6\u7528)
it \u4f5c\u5f62\u5f0f\u4e3b\u8bed\uff0c\u52a8\u540d\u8bcd\u4f5c\u771f\u6b63\u4e3b\u8bed\u4e3b\u8981\u7528\u4e8e\u4e0b\u5217\u53e5\u578b\uff1a
It's +n.\uff08\u540d\u8bcd\u6216\u540d\u8bcd\u77ed\u8bed\uff09/adj.\uff08\u5f62\u5bb9\u8bcd\uff09+ doing sth.
1\uff09\u4e0b\u5217\u5f62\u5bb9\u8bcd\u540e\u5e38\u7528\u52a8\u540d\u8bcd\u4f5c\u771f\u6b63\u4e3b\u8bed\uff1anice,good,useless,hard,foolish,enjoyable,worthwhile\u7b49\u3002\u4f8b\u5982\uff1a
It is nice talking to you. \u8ddf\u4f60\u4ea4\u8c08\u771f\u662f\u6109\u5feb\u3002
It's foolish behaving like that. \u8fd9\u6837\u7684\u8868\u73b0\u662f\u5f88\u611a\u8822\u7684\u3002
It is useless doing that. \u90a3\u6837\u505a\u6ca1\u7528\u3002
\u540d\u8bcd\u4ece\u53e5\u4f5c\u771f\u6b63\u4e3b\u8bed
\u7528it \u4f5c\u5f62\u5f0f\u4e3b\u8bed\u7684\u7ed3\u6784\u4e3b\u8981\u7528\u4e8e\u4e0b\u5217\u53e5\u578b\uff1a
It +\u8c13\u8bed+\u540d\u8bcd\u4ece\u53e5\uff08\u4e3b\u8bed\u4ece\u53e5\u3001\u8868\u8bed\u4ece\u53e5\u3001\u540c\u4f4d\u8bed\u4ece\u53e5\uff09
\u2488It is +\u540d\u8bcd+\u4ece\u53e5\uff1a \u8fd9\u6837\u7684\u540d\u8bcd\u6709a fact,a surprise,an honor\uff08\u975e\u5e38\u8363\u5e78\uff09\uff0ca pity,common knowledge\uff08\u5e38\u8bc6\uff09\u7b49\u3002\u4f8b\u5982\uff1a
It is common knowledge that the full moon brings fair weather. \u7693\u6708\u5146\u5929\u6674\uff0c\u8fd9\u662f\u5e38\u8bc6\u3002
Collecting stamps is one of his hobbies. 集邮是他的爱好之一。
It is one of his hobbies to collect stamps. (用to collect使句子结构的辨识度更高一点，但意思完全没变，是相同的）
=It is one of his hobbies collecting stamps.
不可以。从句子而言it is ... to do是固定句型。从含义上来说，to有为了/去做什么事/到等含义，这种句子里的含义就是“（去）素是他的爱好之一”。而ing形式表达的含义就是正在进行，或者主动含义，但是二者是语态，在这里的成分不属于语态部分，属于词的用法，而ing的动词只有在前面加特殊介词才可以用。
可能说得比较乱，也有点不太对，但是大致是这么个意思。
绛旓細杩欎竴鍙ヤ腑It涓哄舰寮忎富璇紝to learn physics well鏄湡姝ｇ殑涓昏銆涓轰簡浣垮彞瀛愬钩琛★紝寰寰鐢ㄥ舰寮忎富璇璱t鏀惧湪涓昏鍘熸潵鐨勪綅缃紝鑰屽皢鐪熸鐨勪富璇斁鍦ㄥ彞灏銆傚舰寮忎富璇彧鑳芥槸it锛岄氬父鐢ㄤ簬涓浜涘浐瀹氱殑鍙ュ紡涓傚 It + be + adj./n. + to do sth.It + be + adj./n. + that-clause.It + be + p.p. + tha...
绛旓細鑰佸笀杩欎箞璺熸垜璇寸殑锛鐢╥t浣滃舰寮忎富璇槸鍥犱负涓昏澶暱浜嗗彞寮忎笉濂界湅锛屾墍浠ョ敤it浣滃舰寮忎富璇竴鑸殑缁撴瀯鏄疘t's +adj.+to do sth.to鍚庨潰寮曞鐨勬槸鐪熸涓昏锛屽氨鏄繖鏍
绛旓細it鐢ㄤ綔褰㈠紡涓昏鍜屽璇槸鍥犱负鑻辫鍙ュ瓙閫氬父瑕佹眰缇庤,涓嶅枩娆㈠ご澶,鑲氬瓙澶х殑鍙ュ瓙,鎵浠ラ氬父鎶婂緢闀跨殑涓昏鍜屽璇斁鍒板彞瀛愮殑鍚庨潰,鏈潵搴旇鏄富璇,瀹捐鐨勫湴鏂圭敤it鏉ヤ唬鏇.濡:It is difficult for me to do the homework alone.to do the homework alone 鏄湡姝ｇ殑涓昏 I think it impossible for me to do the...
绛旓細it杩欎釜褰㈠紡涓昏鏈澶х殑浣滅敤灏辨槸锛閬垮厤鍦ㄨ鍙ヤ腑鍑虹幇澶撮噸鑴氳交鐨勭幇璞銆傛垜浠兘鐭ラ亾锛岃嫳璇殑琛ㄨ揪鏂瑰紡鍜屾眽璇笉鍚屼箣澶勫湪浜庯紝浠栦滑涔犳儻鎶婃渶閲嶈鐨勶紝鏈鍏抽敭鐨勫唴瀹规斁鍦ㄥ墠闈紝鐒跺悗鍐嶇敤瀹氳浠庡彞鍟︼紝瀹捐琛ヨ冻璇暒绛夌瓑鏉ヤ慨楗拌繖涓噸瑕佺殑鍐呭銆傛瘮濡傛垜浠琛ㄨ揪锛氬湪鍏紬鍦烘墍闅忓湴鍚愮棸鏄緢涓嶆枃鏄庣殑銆傚鏋滄寜鐓т腑鏂囪搴忓氨鏄細Spittin...
绛旓細褰撲富璇儴鍒嗗お闀挎椂涓轰簡鍙ュ瓙骞宠 閲囩敤it浣滃舰寮忎富璇紝鎵璋撳舰寮忔槸鎸囧彞瀛愮殑鐪熸涓昏灏嗗湪鍙ュ瓙鏈鍑虹幇銆俰t浣滃舰寮忎富璇唬鏇夸富璇粠鍙ユ椂锛屽舰寮忎富璇璱t娌℃湁鍏蜂綋鐨勫惈涔夛紝鍙槸甯姪鎶婄湡姝ｇ殑涓昏绉诲埌鍙ュ瓙鍚庨潰鍘伙紝浣垮彞瀛愭樉寰楀钩绋充竴浜涖傛鏃讹紝涓昏浠庡彞鍙互鐢ㄤ粠灞炶繛璇峵hat寮曞锛屼篃鍙互鐢ㄨ繛鎺ヤ唬璇嶆垨杩炴帴鍓瘝寮曞銆傚舰寮忎富璇槸浠涔 褰㈠紡...
绛旓細涓烘弧瓒宠娉曚笂鐨勯渶瑕侊紝閬垮厤鍙ュ瓙澶撮噸鑴氳交 It is a hard job for the police to keep order in an important football match.濡傛灉涓嶇敤it鍋氬舰寮忎富璇锛岄偅涔堝彞瀛愬氨鏄細(To keep order in an important football match) is a hard job. 鎷彿鍐呭氨鏄富璇 ...
绛旓細It+be+adj+锛坒or sb/of sb锛+to do sth鎰忎负鈥滐紙瀵规煇浜烘潵璇达級鍋氭煇浜嬫槸鈥︹︾殑鈥濄it涓褰㈠紡涓昏锛岀湡姝ｇ殑涓昏鏄悗闈㈢殑鍔ㄨ瘝涓嶅畾寮忕煭璇傚洜涓哄姩璇嶄笉瀹氬紡鐭鍋氫富璇杈冮暱锛屾墍浠ョ敤it浠ｆ浛璋撹鍔ㄨ瘝浠ラ伩鍏嶅ご閲嶈剼杞汇備緥濡傦細It's necessary to study hard.鍔姏瀛︿範鏄湁蹇呰鐨勩傝鍙ョ渷鐣ヤ簡鍔ㄨ瘝涓嶅畾寮忕殑閫昏緫涓昏銆
绛旓細all the students held a meeting in the room.It 浣褰㈠紡涓昏浠ｆ浛涓昏浠庡彞锛屼富瑕佹槸涓轰簡骞宠 鍙ュ瓙缁撴瀯锛屽畠鏄舰寮忕殑涓昏鑰屼笉鏄富璇粠鍙ャ備富璇粠鍙ョ殑杩炶瘝淇濇寔涓嶅彉銆傚畠鎸囧悜鐨勫己璋冨彞寮鸿皟鍙ュ瓙鐨勪竴閮ㄥ垎锛屼笉绠″己璋冪殑鏄粈涔堬紝瀹冮兘鍙互鐢ㄤ綔杩炴帴璇嶃備富璇粠鍙ワ細It is +褰㈠璇/鍚嶈瘝/鏌愪簺鍔ㄨ瘝ed + that 浠庡彞銆
绛旓細浣滀负褰㈠紡涓昏鐨it骞舵棤瀹為檯璇箟锛屽彧鏄负婊¤冻璇硶涓婄殑闇瑕侊紝閬垮厤鍙ュ瓙澶撮噸鑴氳交锛屽畠浠ｆ浛鐨勬槸鍙ュ瓙鐨勯昏緫涓昏銆備綔褰㈠紡涓昏鐨勪唬璇嶅彧鑳界敤it 锛屼笉鑳界敤that锛宼his绛夎瘝銆俰t 浣滃舰寮忎富璇紝涓昏鍒嗕负涓嬪垪涓夌鎯呭喌锛氫笉瀹氬紡浣滀富璇佸姩鍚嶈瘝浣滀富璇 鍜 鍚嶈瘝浠庡彞浣滀富璇備笉瀹氬紡浣滈昏緫涓昏濡傦細It is very kind of you to ...
绛旓細涓嶅彲浠ャ備粠鍙ュ瓙鑰岃█it is ... to do鏄浐瀹氬彞鍨嬨備粠鍚箟涓婃潵璇达紝to鏈変负浜/鍘诲仛浠涔堜簨/鍒扮瓑鍚箟锛岃繖绉嶅彞瀛愰噷鐨勫惈涔夊氨鏄滐紙鍘伙級绱犳槸浠栫殑鐖卞ソ涔嬩竴鈥濄傝宨ng褰㈠紡琛ㄨ揪鐨勫惈涔夊氨鏄鍦ㄨ繘琛岋紝鎴栬呬富鍔ㄥ惈涔夛紝浣嗘槸浜岃呮槸璇侊紝鍦ㄨ繖閲岀殑鎴愬垎涓嶅睘浜庤鎬侀儴鍒嗭紝灞炰簬璇嶇殑鐢ㄦ硶锛岃宨ng鐨勫姩璇嶅彧鏈夊湪鍓嶉潰鍔犵壒娈婁粙璇嶆墠...
