14.过去将来进行时:( would be doing ) 例:The government promised that a new highway would be being built next July. 政府承诺说第二年7月将有一条新的高速公路正在修建。 15.过去将来完成时:(would have done) 例:I believed by the end of that year an advanc...
1. 陈述句充当宾语从句时,用that引导,that无词义,在口语或非正式文体中常省略。 I hope (that) you will enjoy our performance. She told us (that) the score was 2 to 1. 2. 当由一般疑问句充当宾语从句时,用if或whether引导,意为“是否”。 (1) Is it an interest...
3) 情态动词没有人称,数的变化,即情态动词第三人称单数不加-s。 4) 情态动词没有非谓语形式,即没有不定式,分词,等形式。 比较can 和be able to 1)can could 表示能力;可能(过去时用could), 只用于现在式和过去式(could)。be able to可以用于各种时态。They will be ab...
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