摘要
不能将句(1)中的“as if”改成“that”。主句的主语可为it,也可为名词或其它代词。句(2)和句(3)中的“that”和“as if”都很常见。上面的“It looks as if…”.“It seemed that/as if…”和“It appears that/as if…”均可译为“看起来……”。句(2)可转换为“She seemed to be ill”;句(3)可转换为“Mary appears to win the game”。若that从句中谓语动词的动作发生在主句谓语动词的动作之前,则不定式应为完成形式。