初中英语四种时态详细讲解(适合初一学生)1. 一般现在时:(1)表示常常发生(2)构成:先瞧主语主语就是三单,动词+s主语非三单,动词用原形。Th e y o fte n watch TV、He often watche s T V、(3)变化:问句:主语前+do/d oe s,动词用原形;否定:主语后+don't/doe s n’t,动词用原形.Do they of t en wat c h T V? They do n’t o f te n w a tch TV、Doe s he ofte n watch T V? He doesn’t of t en w atc h T V、2. 现在进行时:a) 表示现在正在发生。句中常有 now,l oo k,li s te n等b) 构成:主语+b e+do i ng She is w a t c hin g T V now、c) 变化问句:提前 be(a m,is,a r e)Is she watchi n g T V no w?否定:be 后+n otS he is n't wa tching TV n ow、d) 加 in g得方法:一般直接+,去不发音得 e 加,闭音节双写+。3. 一般过去时:a) 表示 过去得动作或状态,句中常有y es te rday,last 等过去得时间。b) 构成:动作:主语+动词得过去式状态:主语+w a s/w e re(句中没实意动词)S he w a tch e d TV l ast n ig h t、She was he re l a st n i ght、c) 变化:问句:主语前+di d,动词用原形Di d s h e wat ch TV last n i ght?Was s he here l a st ni g h t?否定:主语后+didn’t,动词用原形.S h e di d n’t wa tch T V l a s t n ig ht、She wa sn’t wa tc h TV last ni ght、(4) 过去式:一般+ed;e 结尾+d;辅音+y 得,去y+ied;闭音节双写+e d;不规则得 120 页。4. 一般将来时:a) 表示:将来 ,句中有表示将来得时间:t omorrow、n e x t、soon,i n t wo d ay s 等b) 构成A:主语+w i ll+do(任何人称)B:主语+s h a ll+d o(仅第一人称I,w e)C:主语+be going to +do 如:A:S he wil l watch TV this e v eni n g、B:W e sh al l wa tch T V t hi s e ve ni ng、C:Sh e i s go i ng to w a t c h TV th i s e v ening、c) 变化问句:提前w i l l/sh a ll/beA:W i ll s he watch T V t his…?B: S ha ll we wa t c h TV …?C: I s she going to w atch …?否定:在 will /shal l/be 后+n o tA: S h e won't w atch TV…B: We sh a ll n ot w atch… s h an'tC: She is n’t g oing to wat ch…Th e re is a mee ti ng next wee k、Ther e was a meeting y este r d a y、There w i ll be a m ee t ing n ex t…=Th e r e i s g o i ng t o b e a m e et i ng next …