1.在表示建议,要求,命令,想法的动词后的从句里,用should + 动词原形,should 可以省略.如 advise,agree,command,decide,demand,determine,grant,indicate,insist,order,prefer,propose,request,require,stipulate,suggest,urge,vote.常考到的是:suggest,advise,demand,require,propose,insist,order,request.<br>His doctor suggested that he (should) take short leave of absence.<br>The author proposed that TV (should) be turned off at least one hour every day.<br>2.在表示建议,要求,命令,想法的名词后的从句里,用should + 动词原形,should可以省略.如 advice,decision,agreement,command,decree,demand,determination,indication,insistence,order,preference,proposal,request,requirement,stipulation etc.<br>It was Bill’s suggestion that everyone (should) have a map.<br>His suggestion was that everyone (should) have a map.<br>He gave us a suggestion that everyone (should) have a map.<br>3.在It is/was +形容词后的that 从句中用should的结构,should 可以省略.这类形容词常见的有:advisable,anxious,compulsory,crucial,desirable,eager,essential,fitting,imperative(绝对必要),impossible,improper,important,natural,necessary,obligatory,
宾语从句that通常可以将其省略,但也有不可省略的时候。that引导的宾语从句作介词宾语时,that不能省略。<br><img><br><h2>that</h2><br>英:[ðæt,ðət];美:[ðæt,ðət]<br>det.(指较远的人或事物)那,那个;(指已提到过或已知的人或事物)那<br>pron.(指较远的人或事物)那,那个;(指已提到过或已知的人或事物)那,那个;(特指)那,那种,那些<br>conj.用于某些动词、形容词和名词后,引出从句;(表示结果)如此…以至;(表示希望或愿望)多么<br>adv.(以手势表示长度、大小等时用)那样,那么;不很;不那么;(用以强调程度)那么<br>复数:those<br><h2>That不可省略情况</h2><br>宾语从句中的that起引导作用,在句中不做任何成分,没有实际意义,通常可以将其省略。但是在以下情况中,that不能省略:<br>1、and连接两个宾语从句,that宾语从句放在and的后面时,that不能省略。<br>2、that引导的宾语从句作介词宾语时,that不能省略。<br>3、that从句位于句首时,that不可省略。<br>4、主句谓语动词与that从句之间有插入语,that不可省略。<br><h2>That用法</h2><br>1、that用作限定词that用作限定词是指“较远的人或者物”<br>2、that作代词用<br>1)用于指代前面提到过的想法或情形<br>2)为避免重复前面已提及到的名词<br>3)用于识别身份或询问他人身份<br>3、that引导从句<br>1)引导定语从句(代替先行词在从句中充当主语或者宾语)<br>2)引导名词性从句(只起连接作用不充当任何成分)<br>a. 引导主语从句:<br>b. 引导宾语从句。<br>c. 引导表语从句<br>d. 引导同位语从句