as if / though引导表语从句时,在句子中也不充当任何成分,但有意义。译为:似乎,好像。
He looks as if he were a rich man.
It sounds as if someone is knocking at the door.
他看起来好像是个富翁。
听起来好像有人在敲门。
(三)由从属连词 as if/through引导的表语从句