英语,i don't think that i shall fail.but if( ),i would try again.i don't think that i shall fail.but if( ),i would try again.a,should fail b,would fail c,failed d,had failed答案给的a,不理解

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英语,i don't think that i shall fail.but if( ),i would try again.
i don't think that i shall fail.but if( ),i would try again.
a,should fail b,would fail c,failed d,had failed
答案给的a,不理解

这是表示与将来事实可能相反,虚拟语气的一种形式
此时,条件句有3种可选形式
1.过去式,这里用failed
2.should + 动词原形 (比如这题)
3.were + to+ 动词原形 这里就得说 ( were to fail)
请及时采纳,不懂继续问( 天天在线 )

should fail是'should'中虚拟语气的用法。你百度一下或查一下字典,'should'的用法。

should 可以表示万一……
我认为我不会失败,但是万一失败的话,我将再次尝试。
加油!

a,这题考的是虚拟语气

should 作为情态动词,可以用于虚拟语气句中,也可以用在条件状语从句中,表示语气较强的假设,译作“万一”、“竟然”,这时也可将 should 置于从句之首,即将 should 放在主语前面,而省略从属连词 if 用在表示与将来事实相反的条件状语从句中,构成
“ If …… should (do sth)……, …… would/ could/ might (do sth.) …… ”<...

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should 作为情态动词,可以用于虚拟语气句中,也可以用在条件状语从句中,表示语气较强的假设,译作“万一”、“竟然”,这时也可将 should 置于从句之首,即将 should 放在主语前面,而省略从属连词 if 用在表示与将来事实相反的条件状语从句中,构成
“ If …… should (do sth)……, …… would/ could/ might (do sth.) …… ”
句式。例如:
If it should (或 were to ) rain tomorrow, the sports meeting would be put off. (= Should it rain tomorrow/ Were it to rain tomorrow, the sports meeting would be put off.)
如果明天天下雨,运动会就会延期举行。
所以选A啊 祝学习进步啊

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