摘要:
part A The present perfect simple is have/has + past participle l/we/they/you have(=l've etc) finshed he/she/it has(=he's etc) lost etc 阅读全文
摘要:
A part we use l'll...(=l will) when we've just decided to do something .when we say l'll do something we announce our decision: for example Oh,l left 阅读全文