1、在for fear that,in case,lest引导的从句中,若用虚拟语气时,从句谓语为:(should) + do。并且should能省略(for fear that,lest),in case不能省略
She examined the door again for fear that a thief (should) come in.
她又把门检查了一遍,以防盗贼的进入。
He started out earlier lest he (should) be late.
他早早地就出发了以防迟到。
2、在so that / in order that 所引导的目的状语从句中,从句中的谓语为:can / could / may / might / will / would / should + do。
He goes closer to the speaker so that he can hear him clearer. 他走近说话的人以便能听得更清楚。
He read the letter carefully in order that he should not miss a word. 他把信读得很仔细以便不漏掉一个字。
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