学会正确使用时态学会合并句子创新演练学会写应用文1、用所给动词的适当形式填空,完成下列短文
[要点提示]使用谓语动词时应注意以下几点:与主语的单复数保持一致;考虑动作发生的时空定位;各种时态的应用;考虑与主语的逻辑关系:1)主谓关系--主动语态2)动宾关系--被动语态3)不及物动词无被动语态Alotofproblems_____________________(alreadycause)
Infuture,manymoreproblems____________(cause),unlesswe___(take)actionnow
Mostoftheproblems___(be)incities
Whenthestreets______(fill)withcars,noone___(can)travelquickly
Theair________(pollute)bygasesfromcars
Theproblems__________(discuss)attheWorldConferenceonClimateChanges,firstinKyotoandtheninBuenosAires
It______________(suggest)thatairpollution_____(cut)infutureyears
havealreadybeencausedwillbecausedtakearearefilledcanispollutedwerediscussedwassuggestedbecutHelpBack2
根据一定的上下文关系用and,but,or,besides,when,while,neither…nor,such…that,so把下列各句连接起来,组成一个单句、并列句或复合句(原句可作适当改动)
要点提示:合并句子时应注意以下几点:理顺上下文逻辑关系