高考英语考前必看考点shall 表命令、警告、允诺、威胁及法律/规章规定You shall have the book tomorrow.If you park your car here, youll be finedshould1)表惊讶,竟然”Im surprised that he should have failed the exam.2)“万一”If the teacher should find it, you would be in toruble.will表意志/意愿、临时决定及习惯(惯于,总是)You may take it away if you will.(愿意)Have you informed Tom to attend the party?Oh,I forget. I will ring him now.(临时决定)be about to do 马上或正要做马上,除when外,不与其他时间连用 (be about to do sth when.正在这时) be