1.befoundin2.betosociatedwith3.betypicalof
4.theuseof5.relyon6.bederivedfrom起源于
7.referto8.beknowntosb9.beknownassth
10.beconcernedwith11.inrelationto关于，与相比12.acton对……起作用
13.bringabout使发生14.protect....from15.togetherwith
16.anumberof17.beableto18.besimilarto
19.bedependenton20.withetoe熟练的21.accordingto
22.specializeindoingsth23.serveto24.atonetime
25.tendto26.interestin27.dueto
28.leadto29.atletot30.contraryto
31.beequalto32.contributetodoingsth33.livein
34.bededicatedtodoing35.dealwith36.belongto
37.itisestimatedthat38.beresistantto39.resultfrom
40.consistof41.inconnectionwith42.transasminto
43.takeplace44.excelatdoing擅长于45.bebtoedon
46.playakeyrole47.spreadto48.comefrom
49.berelatedto50.aminimumof51.begintoSAT语法21原则
52.begindoing53.startto54.startdoing
55.cause/lead/enable/asce/ordersbtodosth56.attempttodosth
57.expectsbtodosth;sbbeexpectedtodosth;sbexpect(itisexpected)that+句子
58.becomparedto/with59.appear/seemtodo60.atatimewhen+句子
61.indicate/state/believe/predict/show/demonstrate/revealthat+句子
62.notonly....,butalso.....;notonly....,buttowell
63.therelationshipbetweenAandB/ofAtoB
64.beresponsibleas(doing)sth/tosb65.句首表“尽管”：whereto/while
66.atatimewhen+从句67.belikelytodosth/that+从句
68.thepossibility/likehood+(1)that从句(2)ofdoingsth(3)ofsth