1. 从句说明的是一般真理、客观事实、自然现象、名言时,仍用现在时。 The boy’s father told the boy that water freezes when the temperature drops below zero. 2. 从句中有具体时间状语,即使从句动作发生在主句动作前,仍然用一般过去时。 The teacher told us th...
when是必然发生(will happen);if是可能发生(might happen) 例句: I'll take care of it when I am free this afternoon. (今天下午我有时间,我会处理。)→一定有时间 I'll take care of...
[解析]B､C｡作并列连词时,when/while用法较为特殊,二者区别是:while表两相对照;而when表突然､在那时,常见于be about to do...when和hardly...when等句型中｡ 考点二、表示原因的连词for/because/as/since 例3.He found it increasingly difficult to read, ___ his ...
[解析]B?C?作并列连词时,when/while用法较为特殊,二者区别是:while表两相对照;而when表突然?在那时,常见于be about to do...when和hardly...when等句型中? 考点二、表示原因的连词for/because/as/since 例3.He found it increasingly difficult to read, ___ his eyes...
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