Should
理解语法是理解一门语言的关键。
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Should
助词should为条件式，用来表达要求或建议:
You should talk to him. 你应该跟他说话。
The employees shouldn't behave like this. 员工不该如此行事。
Should I bring something to eat? 我该带点吃的东西吗？
Should有时表达可能性:
Horatio should be in his lab right now. 霍雷肖应该现在在实验室里。
The results of the vote should satisfy everyone. 投票结果应该会使每个人都满意。
Should 可以表达责任和义务，但是没have to和must词义强烈:
You should be wearing your seat belt. 你最好绑上你的安全带。
如果是过去的动作，我们使用should+'have'+过去分词:
Kalvin Krime should have hired Horatio while he was available. 凯尔文-克里姆应该在霍雷肖没工作时雇佣他的。
Should like to用来礼貌地表达愿望。在非正式英语中，更经常使用would。
I should like to visit Uganda one day. 我想有天能去乌干达。
注意:助词ought to是should的同义词:
I ought to go = I should go. 我应该走
练习 1
Use the following words to fill in the blanks in the text. Be careful! Words may be used more than once:
should | would | could
Horatio not be drinking so much whiskey before work.
Every Tuesday, Bruno clips his toenails, even though he like to do it more often than that.
Susie thought Kevin like a new wallet for his birthday.
When he was just a boy, Bruno not distinguish between a rose and a tulip.
Kevin is out driving in his Porsche, but really he be in his office.
Icarus has been feeling really sick. He probably go to the doctor.
should | would | could
Horatio not be drinking so much whiskey before work.
Every Tuesday, Bruno clips his toenails, even though he like to do it more often than that.
Susie thought Kevin like a new wallet for his birthday.
When he was just a boy, Bruno not distinguish between a rose and a tulip.
Kevin is out driving in his Porsche, but really he be in his office.
Icarus has been feeling really sick. He probably go to the doctor.
Use the following words to fill in the blanks in the text. Be careful! Words may be used more than once:
should | would | could
Horatio should 1 not be drinking so much whiskey before work.
Every Tuesday, Bruno clips his toenails, even though he would 2 like to do it more often than that.
Susie thought Kevin would 3 like a new wallet for his birthday.
When he was just a boy, Bruno could 4 not distinguish between a rose and a tulip.
Kevin is out driving in his Porsche, but really he should 5 be in his office.
Icarus has been feeling really sick. He should 6 probably go to the doctor.
should | would | could
Horatio should 1 not be drinking so much whiskey before work.
Every Tuesday, Bruno clips his toenails, even though he would 2 like to do it more often than that.
Susie thought Kevin would 3 like a new wallet for his birthday.
When he was just a boy, Bruno could 4 not distinguish between a rose and a tulip.
Kevin is out driving in his Porsche, but really he should 5 be in his office.
Icarus has been feeling really sick. He should 6 probably go to the doctor.
1 should: 'Should' expresses the notion of duty or obligation. Neither of the other choices (would or could) fits in this sentence.
2 would: 'Would' expresses the idea of willingness or wish. We use it to form the conditional tense.
3 would: 'Would' expresses the idea of willingness or wish. We use it to form the conditional tense.
4 could: 'Could' is the past tense form of the verb 'to be able to'.
5 should: 'Should' expresses the notion of duty or obligation: Kevin is supposed to be in his office (not driving his Porsche). Neither of the other choices (would or could) fits in this sentence.
6 should: 'Should' expresses the notion of duty or obligation. Neither of the other choices (would or could) fits in this sentence.
练习 2
Horatio be more careful when lighting his cigars in the laboratory.
Horatio should be more careful when lighting his cigars in the laboratory.
should: 'Should' expresses a strong suggestion or advice. Here the speaker is expressing that Horatio needs to be more careful in the laboratory.
would: 'Would be more careful' has no place in this sentence. 'Would' is used to form the conditional tense or to indicate habitual actions in the past. Using 'would' here is grammatically incorrect.
had: The auxiliary 'had' must be followed by the past participle of a verb when used to form a perfect tense. We might say 'Horatio had been careful in the past.'
练习 3
Kevin have bought more bio-tech stocks when he had the chance.
Kevin should have bought more bio-tech stocks when he had the chance.
should: 'Should' expresses the strong suggestion or advice. This sentence expresses a regret that Kevin didn't buy more bio-tech stocks when he had the opportunity.
would: 'Would' can be used to express a wish that is conditional. As this sentence isn't conditional, it doesn't make sense to use it here.
练习 4
Polly and Philip thought that they never find the test monkey again.
Polly and Philip thought that they would never find the test monkey again.
would: 'Will' becomes 'would' when direct speech ('I will be late') becomes reported speech (He said he would be late). It is exactly the same when we report what someone thought. At the moment of losing the monkey, Polly and Philip think that they will never find the test monkey again. When reporting this past thought, this statement becomes: Polly and Philip thought that they would never find the test monkey again.
should: 'Should' expresses a strong suggestion or advice. It does not make sense to use it in this sentence.
练习 5
Philip not talk so much about his infidelity.
Philip should not talk so much about his infidelity.
should: 'Should' expresses a strong suggestion or advice. This sentence expresses that Philip is making a mistake by speaking of his infidelity so frequently.
would: 'Would' can be used to express the idea of willingness or wish. We use it to form the conditional tense. It does not make sense to use it in this sentence.
had: The auxiliary 'had' must be followed by the past participle of a verb when used to form a perfect tense. We might say 'Philip had boasted about his infidelity before his wife discovered him'.
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