1.they use computers to keep the traffic ( )smoothly.

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1.they use computers to keep the traffic ( )smoothly.
A being run B run C to run D running
为什么不用动词过去分词B呢?而用D呢?
2.frequently do something which touches people's hearts.and also allow yourself () by the kindness of others.
A to touch B touched C to be touched D being touched
3.l'd rather you ( )anything about it for the time being.
A haven't done B didin't do C wouldn't have done D don't do
4.the picture is of good quality .if it ( )break down within the first year.we would repair it at our expense.
A would B should C could D might

不好意思第四题我又查了语法书惭愧惭愧~
1 keep+表示状态的形容词/副词/动名词/过去分词
当表示被动状态的时候用过去分词
而这个题目中 traffic应该是主动地运转所以要用表示主动的现在分词
2 C allow+to do 因为后面是 by others 被动所以是to be done形式
3 B 这个是虚拟 would rather+从句结尾for the time being"暂且"表现在所以动词用过去式表虚拟语气
4 B if引导的条件句表示与将来事实可能相反的时候有以下情况
1)[条件从句:动词过去式]+[结果主句:第一人称should或二、三人称would+动词原形] (这是我们常见的形式)
2)[条件从句:were to+动词原形]+[结果从句:同上] (这种虚拟形式比较正式多用于书面语假想性很强实现性很小)
3)[条件从句:should+动词原形]+[结果从句:同上] (这种形式强调一种偶然实现的可能性)
例:If it should rain tomorrow,we should have to put off the match.

1.they use computers to keep the traffic ( )smoothly. they use computers to keep the traffic ( ) smoothly. A.being They use computers to keep the traffic----smoothly A.being r they use computers to keep the traffic( )smoothly.A.being ru They use computers to keep the traffic run smoothly.请翻译一下并说明 they use computers to keep the traffic running smoothly可以是将r 高二英语单选题1.They use computer to keep the traffic ( )smoothly.A 1.They use computers to keep the traffic ______(run) smoothl we can use computers to s_______lots of information they are 英语翻译Traffic rules help to keep order on the road.They also h 英语翻译Traffic rules are made to keep order on the road.They al Traffic rules help to keep order on the road. They also help