1.that引导
宾语从句若跟在建议,命令,请求含义的动词后面则不可省略,且从句常用委婉语气。
2.有and,but连接两个并列宾语从句时前一个that可省,后一个that不可省,舍近求远。
3that从句不可作介词宾语,但but,except,save,in,notwithstanding除外。
but that若不是因为except that除了之外save that除了之外in that=because,notwithstanding that虽然
4that从句不可作admire钦佩,allow允许,behold看到,bid命令,cause引起,celebrate庆祝,condemn注定 dislike厌恶,entreat恳求,hate憎恶,see看见,hear听见,help帮助,let让,like喜欢,loathe嫌恶,overlook忽视love爱,refuse拒绝,force强迫,take认为,want想要的宾语从句,但see觉得发现hear听说时可以
5.that从句不可作accuse sb of控告,blame sb for责怪,congratulate sb on祝贺,denounce sb for指责envy doing羡慕嫉妒excuse sb for doing原谅,forgive sb for doing谅解,impress sb with使受印象双宾的直接宾语