一般现在时的主动与被动的句子结构

主动运输:耗能,从低浓度到高浓度,需要载体；被动运输：不耗能,从高浓度到低浓度.被动运输,分为自由扩散和协助扩散；自由扩散不要载体,协助扩散需要载体.因为自由扩散和协助扩散都不耗能所以称为被动运输.

/>Englishisspokenbylotsofpeopletoday.Thetreesarecutbytheworkers.SomevegetablesandfruitsareeatenbyPau

PeoplespeakSpanishinSouthAmerica.Thestudentsmustfinishthehomeworktoday.Wemustlookupallthewordsinadic

Itakeabook.Abookistakenbyme.Itookabook.Abookwastakenbyme.Ihavetakenabook.Abookhastakenbyme.Ihadtaken

Havingfinishedmywork,Idrovehomealone.Copiedagainandagain,thisarticlebecamemoreandmorepopular.

一般现在时态的被动语态Weareallowedtogoout.我们被允许外出Thequestionswereansweredinpublic.问题被公开答复了一般过去时被动语态Thedoorwasop

物+were\was+过去分词bysbsb+动词过去式+宾语物+is\are+过去分词+宾语sb+动词原形+宾语、物+will\is(are)goingtobe+过去分词sbwill\(……)+动词原

1.UncleWangmendedthecomputeryesterday2.thelettershouldbewrittenbypencil3.thewordcanbelookedupbyyouin

was/weredone再答：are/is再答：willbedone,willbe

1.Thisnewhall(seats)fivehundredpeople.2.Thatknife(doesnotcut)well.3.Thisnewpen(writes)well.4.Theseap

1.Abookwillbewrittenbyhim.2.Iamoftenhelpedbythem.3.Theroomisgoingtobecleanedbyus.4.Theoldmanisusuall

举个例子Hebpughtmethispresent改为被动语态是Thepresentwasboughtformeyesterdaybyhim适当加上介词,调整语序就可以了

举个例子给你吧：主动：todo被动：tobedone再问：哦哦。谢谢再答：给个分呗

WespokeEnglish,Englishwasspokenbyus.,一般过去时WearespeakingEnglish,Englishisspokenbyus现在进行时WespeakEnglis

1一般现在时主动语态read,被动语态read,注意读音不一样了前面是[ri:d]后面是[red]2.现在进行时主动reading,被动语态beingread3.现在完成时主动haveread,被动语

一、一般现在时：概念：经常、反复发生的动作或行为及现在的某种状况.时间状语：always,usually,often,sometimes,everyweek(day,year,month…),once

书卖的好：sellswell不用be　sold　well　如果是被卖出　就是被动　所以下面的是　sells　well　和have　been　sold再问：那第一个呢再答：第一个就是sell　well的

以助动词do为例1.一般现在时：主动：do/does被动：am/is/aredone2.一般过去时：主动：did被动：was/weredone3.一般将来时：主动：will/shalldo被动：wil

主动免疫是机体接受抗原刺激自身产生抗体或者致敏淋巴细胞,被动免疫是直接给机体输入外源抗体或者致敏淋巴细胞!

比如说老师不允许我们吵闹Teacherdon'tallowustomakenoise,改为被动是我们不被允许吵闹而这里的执行者“老师”通常可以省略,上面的主动语态的宾语“我们”这里作为承受者是必须在被