高考英语经典句型必备

1. 使用现在完成时和过去完成时的常用句型： (1) since句型：主句用完成时 从1949年，我婶婶就一直在一家诊所工作。 My aunt has worked in a clinic since 1949. (2) since when +完成时 从什么时候你种植了这么多小树的？ Since when have you planted so many young trees? (3) This/it is the first (third...) time sb have done sth 这是我第一次到这儿。 This is the first time I have been here. (4) by…(到……为止)到过去某个时候为止用过去完 成时，到现在为止。用现在完成时，到将来某个时候为 止用将来完成时。 到我下一个生日为止，我将完成那本书。 She will have finished the book by my next birthday.