会计学/policemangetaticketnoparkingareanewwordsandexpressionsnewwordsandexpressionsnewwordsandexpressionsAskandanswerthequestionsinpairs.Apoliterequestallow&letComparefollowingtwosentences:Pleaseallowmetobuyyouadrink.请让我给你买一杯酒。(听起来显得客气，庄重）Letmebuyyouadrink.让我来给你买一杯酒。（听起来更亲切，随便）However&butFailtodosth.Compare:Remind:表示使…想起，或“记起，提醒”remindsb.todo.Remindsb.ofsth.条件句（ConditionalSentences）类型1---真实条件句（SentencesofRealCondition)条件句是表示在某种条件或要求下，预期会产生某种结果的表达方法。在“真实条件句”中，IF-从句中假设的情况是有可能实现或发生的.1、IF从句中的动词用一般现在时态,主句中的动词用一般将来时态.主句和从句的位置可以互换：Ifheisout,I’llcalltomorrow.Ifhehastime,hewillcome.You’llmissthetrainifyoudon’thurry.He’llgetthereintimeifheruns.2、如果要用从句表达将来的意思,也只能用一般现在时态的形式来表达,而绝不能用将来时的形式：Ifitrainstomorrow,Iwillstayathome.We’llgooutforapicnicifitisfinenextSunday.Ifhehasenoughmoneynextyear,he’llgotoEurope.3、主句的变化形式：a)IF从句中的动词是现在时,主句中的shall/will可以用其它情态动词代替：Ifitrains,wecan/must/maystayathome.Ifitstopsrainingwecan/maygoout.Ifyouwanttoloseweight,youmusteatlessbread.b)IF从句中的动词用现在时,主句还可以是“命令,恳求或劝告”Ifyouwanttoloseweight,youhadbettereatlessbread.Ifyouwanttoloseweight,eatlessbread.IfyouseeTomtomorrow,couldyouaskhimtoringme?4、IF从句的变化：a)从句中可以用现在进行时,表示现在的行为或将来的安排：Ifyouareleavingtomorrow,I'llsendyouacar.IfyouarelookingforPeter,you’llfindhiminthelibrary.b)IF从句中还可用情态动词(can,could)：Hewillcometomorrowifhecan.Iftheycanhelpyou,theywill.