11.24 一般现在时代替完成时 |
1)有些动词用一般现在时代替完成时:hear,tell,learn,write,understand,forget,know,find,say,remember. I hear(= have heard)he will go to London. I forget(=have forgotten)how old he is. 2)句型:It is … since…代替It has been … since … 3)It is(= has been)five years since we last met. |