[答案] (should) adapt himself to
[例5] The professor required
that__________________（我们交研究报告）by Wednesday.[2006.6]
[分析] ①本题考查require后的从句用虚拟
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语气，从句谓语动词应该用(should)+动词原形。②“提交”可以用hand in或submit两个词表达均可。
[答案] we hand in /submit our research reports
⑵ 用在advisable,
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appropriate, desirable, essential, fitting, fundamental, imperative, important, impossible, necessary, obligatory, proper, urgent, vital等
形容词之后的that-分句中。
⑶ 用在advice, decision, decree, demand, desire, importance, instruction, necessity, order, proposal, recommendation,
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requirement, resolution, suggestion等名词之后的that-分句中。 2．be-型虚拟式还可用在以
for fear that, in case 或lest引导的表示“唯恐；以免等”含义的目的状语从句中。从句谓语动
词用(should)+动词原形。 [例6] He wears a pair of sunglasses______________________（唯恐被别人认出来）.[2004.1]
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