英语的简单句有一种叫: 主系表结构, 系动词主要有:
1. be He is a teacher.( a teacher是表语)
2. look 好像;看起来 She looks happy. 她看上去很幸福。( happy)
3. turn 使变酸;使变质;使(树叶等)变色
Leaves turn yellow and red in autumn. ( yell...
表语用来说明主语的身份、性质、品性、特征和状态的,表语常由名词、形容词、副词、介词短语、动词的ing形式、不定式、从句来充当,它常位于系动词(be, become, appear, seem,look,sound,feel,get,smell等词)之后。如果句子的表语也是由一个句子充当的,那么这个充当表语的句子就叫做表语从句。
一. 名词作表语
Africa is a big contin...