初中英语时间状语从句注意几点

时间状语从句注意几点,When/while/before/after/until/assoonas+一个完整的句子构成“时间状语从句”注意几点：一、when/while的区别1.when表示主从句两个动作同时发生或先后发生。而while表示主从句两个动作同时发生或强调主句的动作在从句动作进行期间发生。(1)_theyarewaitingfortheNewYear,theylistentomusic,singsongsanddance.(2)_theboysawhismother,hestoppedcrying.,While,When,2.when+短暂性动词或延续性动词while+延续性动词(1)Hewasdoinghishomework_Isawhim.(2)_shewassinging,wealllostourselvesinherbeautifulvoice.(3)Shewascooking_someoneknockedatthedoor.3.进行时+while+进行时Shewasdancing_Iwassinging,when,When/while,when,while,二until“直到”notuntil直到。才。Hewaiteduntilitwas12oclock.Hedidntgohomeuntilitwas12oclock.三、时态1当主句是一般将来时或祈使句时，从句就用一般现在时。（与if条件句一样，主将从现）(1)I_(tell)himwhenhe_(come)backtonight.(2)Pleasecallmeassoonasyou_(get)theretomorrow.,willtell,comes,get,2.when/while主从句两个动作一长一短，长的动作用过去进行时，短的动作用一般过去时。两个动作分不清长短或先后，一般前后都用进行时，且用while连接。(1)Whenshe_(get)homelastnight,herson_(do)hishomework.(2)Whenthebell_(ring),he_(sleep).(3)Myfatherwasreadingabook_mymotherwascooking.3.before/after主从句两个动作都已经完成了，先完成了的动作用过去的完成时（had+过去分词）。后完成的动作用一般过去时。(1)I_(finish)myhomeworkbeforemymother_(get)homelastnight.(2)Thelastbus_(leave)afterwe_(get)tothebusstop.,got,wasdoing,rang,wassleeping,while,hadfinished,got,hadleft,got,练习：用括号内动词的正确形式填空1.Mymother_(cook)dinnerwhenI_(get)homelastnight.2.I_(meet)LinglingwhenI_(walk)alongthestreet.3.Lily_(listen)tomusicwhileLucy_(read)astorybook.4.Whentheteacher_(come)in,thestudents_(talk)5.He_(call)youassoonashe_(get)toGuangdong.,wascooking