一、 should 何时省略 (1)在表示建议,要求,命令,想法的动词后的从句里, 用 should + 动词原形, should 可以省略. 如 advise, agree, command, decide, demand, determine, grant, indicate, insist, order, prefer, propose, request, require, stipulate, suggest, urge, vote.常考到的是: suggest, advise, demand, require, propose, insist, order, request. 例子:His doctor suggested that he (should) take short leave of absence. The author proposed that TV (should) be turned off at least one hour every day. 2. 在表示建议,要求,命令,想法的名词后的从句里, 用 should + 动词原形, should 可以 省 略 . 如 advice, decision,agreement, command, decree, demand, determination, indication, insistence, order, preference, proposal, request, requirement, stipulation etc. 例子: It was Bill’ s suggestion that everyone (should) have a map. His suggestion was that everyone (should) have a map. He gave us a suggestion that everyone (should) have a map. 3. 在 It is/was +形容词后的 that 从句中用 should 的结构, should 可以省略. 这类形容词常见的有: advisable, anxious, compulsory, crucial, desirable, eager, essential, fitting, impera
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