英语中，一个句子开头用动词，那么在什么情况下，动do 原形 用doing 动名词 用to do 不定式
\u82f1\u8bed\u53e5\u5b50\u4e2d\uff0c\u5f00\u5934\u52a8\u8bcd\u4ec0\u4e48\u65f6\u5019\u7528To do\u4ec0\u4e48\u65f6\u5019\u7528doing\u4ec0\u4e48\u65f6\u5019\u7528\u539f\u578b\uff1fTo do\u653e\u5728\u53e5\u5b50\u4e2d\u662f\u201c\u4e3a\u4e86...\u201d\u7684\u610f\u601d\uff0c\u5982:To get to the zoo,you must cross the roadDoing\u662f\u7528\u4f5c\u52a8\u540d\u8bcd\uff0c\u5982\uff1aDoing homework is important.Do\u7528\u5728\u7948\u4f7f\u53e5\u4e2d\uff0c\u5982\uff1aOpen the door,please.
\u52a8\u8bcd\u5750\u4e3b\u8bed\u7528\u52a8\u540d\u8bcd\u4e5f\u5c31\u662fv\u2013ing,\u7948\u4f7f\u53e5\u901a\u5e38\u7701\u7565\u4e3b\u8bedyou,\u6240\u4ee5\u52a8\u8bcd\u5728\u5f00\u5934\u7528\u539f\u5f62\uff0c
Faced with this problem,i feel so puzzled；像这里ed的作状语，可以还原i am faced with.....一般可以搭配的。
Faceing this problem，i feel so puzzled；表同时进行的动作，强调这个动作正在发生；
to do 一般表示目的，义务做的事，有时也是固定搭配
To help others is our duty；
祈使句用原型，作主语时用doing和to do 。
动名词作主语
绛旓細To help others is our duty锛
绛旓細涓鑸璇濈殑璇濓紝鐢ㄥ懡浠よ姘旂殑鏃跺欑敤鍘熷瀷锛屽氨鏄墍璋撶殑绁堜娇鍙锛屾瘮濡傦細Go to bed,Jack 琛ㄧず涓绉嶈寰嬫х殑锛岀湡鐞嗘х殑锛屾棩甯哥敓娲讳腑涔犳儻绛夌瓑鐨勪細鐢ㄥ姩鍚嶈瘝锛孒aving breakfast is good for your health.鑰屼笉瀹氬紡涓鑸〃绀烘湁鐩殑锛屾垨寮鸿皟杩欎竴娆★紝涓绉嶇殑鍏蜂綋鎯呭喌浼氱敤涓嶅畾鏃讹細To pass the exam,he study hard for ...
绛旓細1.鍔犲姪鍔ㄨ瘝do, does鎴杁id 鐨勮偗瀹氬彞鍙樻垚鍚﹀畾鍙ユ椂锛屽叾鍚庨潰鐨勫姩璇嶈鐢ㄥ姩璇嶅師褰锛汬e didn鈥檛 work hard at English last term.2.鎯呮佸姩璇嶅悗闈㈣鐢ㄥ姩璇嶅師褰紱Must I be at home tonight?3.be going to, will, shall 绛夋瀯鎴愮殑灏嗘潵鏃舵侊紝鍏跺悗闈㈢殑鍔ㄨ瘝瑕佺敤鍔ㄨ瘝鍘熷舰锛汿here will be on a new interest...
绛旓細濡傛灉鏄仛涓昏鐨勮瘽锛岄偅灏辩敤ing褰㈠紡锛屽嵆鍔ㄥ悕璇 濡傛灉鍋氱姸璇殑璇濄傚氨鐪嬭繖涓姩璇嶄笌涓昏涔嬮棿鐨勫叧绯汇傚鏋滄槸鏄富璋擄紙涓诲姩锛夊叧绯伙紝鍒欑敤ing锛屽鏋滄槸鍔ㄥ锛堣鍔級鍏崇郴锛屽垯鐢╡d銆傚浜庢椂鎬佹柟闈紝ing琛ㄨ繘琛屻俥d琛ㄥ畬鎴 寤鸿鍘荤櫨搴︽枃搴撴悳涓涓 闈炶皳璇姩璇 http://wenku.baidu.com/view/708bde7fa26925c52cc5bf33...
绛旓細鍔ㄨ瘝寮澶寸殑鍙ュ瓙锛氾紙1锛濡傛灉鏄浣垮彞锛岀敤鍔ㄨ瘝鍘熷舰锛堝叾瀹炶繖鏄渷鐣ヤ簡涓昏you锛銆傚锛欸o back to your seat.鍥炲埌浣犵殑搴т綅涓婂幓銆傦紙2锛夊鏋滆繖涓姩璇嶄綔涓昏锛屼竴鑸敤ing銆傝繖鏃跺姩璇峣ng鍙姩鍚嶈瘝锛岀浉褰撲簬涓涓悕璇嶃傚锛歀istening to music is my favorite.鍚煶涔愭槸鎴戠殑鏈鐖便傦紙3锛夊鏋滆繖涓姩璇嶄綔涓昏锛屼篃鍙互鐢...
绛旓細鍔ㄨ瘝寮澶寸殑鍙ュ瓙锛岋紙1锛濡傛灉鏄浣垮彞锛岀敤鍔ㄨ瘝鍘熷舰锛堝叾瀹炶繖鏄渷鐣ヤ簡涓昏you锛夈傚锛欸o back to your seat.Open the window,please.锛2锛夊鏋滆繖涓姩璇嶄綔涓昏锛屼竴鑸敤ing銆傝繖鏃跺姩璇峣ng鍙姩鍚嶈瘝锛岀浉褰撲簬涓涓悕璇嶃傚锛歀istening to music is my favorite.鍚煶涔愭槸鎴戠殑鏈鐖便係eeing is believing.鐧鹃椈涓嶅...
绛旓細doing ,done ,do ,to do ,鍥涚鍙互缃簬鍙ラ銆俤oing 鐢ㄤ簬鐙珛涓绘牸缁撴瀯,琛ㄧず涓诲姩鍜岃繘琛屾椂 For example:Walking in the street,a stone fell down.Hearing the news,she laughed..done 涔熺敤浜庣嫭绔嬩富鏍肩粨鏋,琛ㄧず琚姩鍜岃繃鍘绘椂 For example:Punished,the boy cried.to do 琛ㄧ洰鐨 For example;To catch ...
绛旓細鎴戝彧鐭ラ亾淇╋紝绗竴锛屼竴涓彞瀛涓櫎浜寮澶涓涓瘝鏄姩璇嶆椂锛屽悗闈㈣繕鏈鍔ㄨ瘝锛灏鐢ㄥ姩璇ing褰㈠紡锛涚浜岋紝浠ュ姩璇嶅姞鍚嶈瘝寮澶达紝灏辩敤ing褰㈠紡锛屼緥濡傦細going shopping is waste our youth銆
绛旓細1銆佷竴涓畝鍗曞彞涓紝涓嶈兘鍚屾椂瀛樺湪涓や釜闈炲苟鍒楃殑璋撹鍔ㄨ瘝銆傚嵆鍓嶉潰鏈変竴涓璋撹鍔ㄨ瘝锛鍚庨潰娌℃湁骞跺垪鍏崇郴鏃讹紝灏卞彧鑳戒娇鐢ㄩ潪璋撹鍔ㄨ瘝褰㈠紡銆備緥濡傦細There 銆恆re璋撹鍔ㄨ瘝銆 some boys 銆恜laying basketball 鐜板湪鍒嗚瘝鐭銆憃n the playground銆2銆佸湪绠鍗曞彞涓紝濡傛灉鍓嶉潰鎵鐢ㄥ姩璇鐨勯昏緫涓昏灏辨槸鍙ュ瓙鍚庨潰鐨勪富璇紝鍓嶉潰鐨勫姩璇...
绛旓細1.杩欎釜鍔ㄨ瘝鍜鍙ュ瓙涓昏鐨勫叧绯绘槸涓诲姩鐨勬椂鍊,鐢╥ng褰㈠紡,濡傦細Seeing her mother,the little girl began to cry.鍔ㄨ瘝see鏄敱涓昏little girl鍙戝嚭鐨勪富鍔ㄥ姩浣.鍙互杩樺師鎴愶細WHen the little girl saw her mother,she began to cry.2.杩欎釜鍔ㄨ瘝鍜屽彞瀛愪富璇殑鍏崇郴鏄鍔ㄧ殑鏃跺,鐢╡d褰㈠紡,濡傦細Seen from this ...
