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题库 / Prep2007E2-SC-72
Several educational research groups are denouncing the mayor's proposal of a system by which individual teachers would be given raises or bonuses should it be that test scores show their students' mastery of reading skills having improved over a nine-month period.
should it be that test scores show their students' mastery of reading skills having
should it be that test scores show their students' mastery of reading skills have
should test scores showing their students' mastery of reading skills has
if test scores showing their students' mastery of reading skills having
if test scores show that their students' mastery of reading skills has
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1、if引导条件状语从句,从句可为真实条件从句,也可为虚拟条件从句。如为真实条件从句,谓语用陈述语气,表示“假使”“如果”,if+一般现在时，sb do/may/can/will do sth，后者的区别在于：do表示确定发生，may表示可能发生，will表示将来。如：If Sophie eats pizza, then she becomes ill. VS If Sophie eats pizza, then she may become ill. VS If Sophie eat pizza tomorrow, then she will become ill.
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