style="width: 388.5pt" cellspacing="0" cellpadding="0" width="518" border="0">
style="border-right: black 1pt solid; padding-right: 0cm; border-top: black 1.5pt solid; padding-left: 0cm; padding-bottom: 0cm; border-left: black 1.5pt solid; width: 73.5pt; padding-top: 0cm; border-bottom: black 1pt solid; height: 29.8pt; background-color: transparent" valign="top" width="98"> style="margin: 0cm 0cm 0pt 10.5pt; text-indent: -10.5pt; line-height: 180%" align="center"> style="border-right: black 1pt solid; padding-right: 0cm; border-top: black 1.5pt solid; padding-left: 0cm; padding-bottom: 0cm; border-left: black 1pt solid; width: 170.25pt; padding-top: 0cm; border-bottom: black 1pt solid; height: 29.8pt; background-color: transparent" valign="top" width="227"> style="margin: 0cm 0cm 0pt 10.5pt; text-indent: -10.5pt; line-height: 180%" align="center">条件从句的谓语形式style="border-right: black 1.5pt solid; padding-right: 0cm; border-top: black 1.5pt solid; padding-left: 0cm; padding-bottom: 0cm; border-left: black 1pt solid; width: 144.75pt; padding-top: 0cm; border-bottom: black 1pt solid; height: 29.8pt; background-color: transparent" valign="top" width="193"> style="margin: 0cm 0cm 0pt 10.5pt; text-indent: -10.5pt; line-height: 180%" align="center">主句的谓语形式style="border-right: black 1pt solid; padding-right: 0cm; border-top: black 1pt solid; padding-left: 0cm; padding-bottom: 0cm; border-left: black 1.5pt solid; width: 73.5pt; padding-top: 0cm; border-bottom: black 1pt solid; height: 29.55pt; background-color: transparent" valign="top" width="98"> style="margin: 0cm 0cm 0pt 10.5pt; text-indent: -10.5pt; line-height: 180%" align="center">与现在事实相反style="border-right: black 1pt solid; padding-right: 0cm; border-top: black 1pt solid; padding-left: 0cm; padding-bottom: 0cm; border-left: black 1pt solid; width: 170.25pt; padding-top: 0cm; border-bottom: black 1pt solid; height: 29.55pt; background-color: transparent" valign="top" width="227"> style="margin: 0cm 0cm 0pt 10.5pt; text-indent: -10.5pt; line-height: 180%" align="center">If主语+动词过去式style="border-right: black 1.5pt solid; padding-right: 0cm; border-top: black 1pt solid; padding-left: 0cm; padding-bottom: 0cm; border-left: black 1pt solid; width: 144.75pt; padding-top: 0cm; border-bottom: black 1pt solid; height: 29.55pt; background-color: transparent" valign="top" width="193"> style="margin: 0cm 0cm 0pt 10.5pt; text-indent: -10.5pt; line-height: 180%" align="center">主语+should/would/could/might+动词原形style="border-right: black 1pt solid; padding-right: 0cm; border-top: black 1pt solid; padding-left: 0cm; padding-bottom: 0cm; border-left: black 1.5pt solid; width: 73.5pt; padding-top: 0cm; border-bottom: black 1pt solid; height: 27.3pt; background-color: transparent" valign="top" width="98"> style="margin: 0cm 0cm 0pt 10.5pt; text-indent: -10.5pt; line-height: 180%" align="center">与过去事实相反style="border-right: black 1pt solid; padding-right: 0cm; border-top: black 1pt solid; padding-left: 0cm; padding-bottom: 0cm; border-left: black 1pt solid; width: 170.25pt; padding-top: 0cm; border-bottom: black 1pt solid; height: 27.3pt; background-color: transparent" valign="top" width="227"> style="margin: 0cm 0cm 0pt 10.5pt; text-indent: -10.5pt; line-height: 180%" align="center">If主语+had +动词过去分词style="border-right: black 1.5pt solid; padding-right: 0cm; border-top: black 1pt solid; padding-left: 0cm; padding-bottom: 0cm; border-left: black 1pt solid; width: 144.75pt; padding-top: 0cm; border-bottom: black 1pt solid; height: 27.3pt; background-color: transparent" valign="top" width="193"> style="margin: 0cm 0cm 0pt 10.5pt; text-indent: -10.5pt; line-height: 180%" align="center">主语+should/would/could/might+have+过去分词style="border-right: black 1pt solid; padding-right: 0cm; border-top: black 1pt solid; padding-left: 0cm; padding-bottom: 0cm; border-left: black 1.5pt solid; width: 73.5pt; padding-top: 0cm; border-bottom: black 1.5pt solid; height: 42.1pt; background-color: transparent" valign="top" width="98"> style="margin: 0cm 0cm 0pt 10.5pt; text-indent: -10.5pt; line-height: 180%" align="center">与将来事实相反style="border-right: black 1pt solid; padding-right: 0cm; border-top: black 1pt solid; padding-left: 0cm; padding-bottom: 0cm; border-left: black 1pt solid; width: 170.25pt; padding-top: 0cm; border-bottom: black 1.5pt solid; height: 42.1pt; background-color: transparent" valign="top" width="227"> style="margin: 0cm 0cm 0pt 10.5pt; text-indent: -10.5pt; line-height: 180%" align="center">If主语+动词过去式style="margin: 0cm 0cm 0pt 10.5pt; text-indent: -10.5pt; line-height: 180%" align="center"> +should+动词原形style="margin: 0cm 0cm 0pt 10.5pt; text-indent: -10.5pt; line-height: 180%" align="center"> +were to+动词原形style="border-right: black 1.5pt solid; padding-right: 0cm; border-top: black 1pt solid; padding-left: 0cm; padding-bottom: 0cm; border-left: black 1pt solid; width: 144.75pt; padding-top: 0cm; border-bottom: black 1.5pt solid; height: 42.1pt; background-color: transparent" valign="top" width="193"> style="margin: 0cm 0cm 0pt 10.5pt; text-indent: -10.5pt; line-height: 180%" align="center">主语+should/would/could/might+动词原形style="background: white; margin: 0cm 0cm 0pt 10.5pt; text-indent: -10.5pt; line-height: 18.75pt"> style="background: white; margin: 0cm 0cm 0pt 10.5pt; text-indent: -10.5pt; line-height: 18.75pt">1.从句中若含有should, had或者were,那么就可以把它们放在句首,与主语颠倒形成倒装,但动词过去式不可以与主语倒装。style="background: white; margin: 0cm 0cm 0pt 10.5pt; text-indent: -10.5pt; line-height: 18.75pt">2.件状语从句表示的行为和主句表示的行为所发生的时间不一致时,被称为"错综时间条件句",动词的形式要根据它所表示的时间作出相应的调整。style="background: white; margin: 0cm 0cm 0pt 10.5pt; text-indent: -10.5pt; line-height: 18.75pt">3.词短语代替条件状语从句。常用的介词由with, without, but for等。style="background: white; margin: 14pt 0cm 14.5pt">Intergrating Skillsstyle="background: white; margin: 0cm 0cm 0pt 10.5pt; text-indent: -10.5pt; line-height: 18.75pt">1 prevent sb/sth (from)sth / doing sth style="background: white; line-height: 18.75pt">stop sb (from) sth/ dong sth style="background: white; line-height: 18.75pt">keep sb from sth. / doing sthstyle="background: white; margin: 0cm 0cm 0pt 10.5pt; text-indent: -10.5pt; line-height: 18.75pt">2 deal with a great/good deal ofstyle="background: white; margin: 0cm 0cm 0pt 10.5pt; text-indent: -10.5pt; line-height: 18.75pt">3 call for Call at call on call on sb to do call in call up call offstyle="background: white; margin: 0cm 0cm 0pt 10.55pt; text-indent: -10.55pt; line-height: 18.75pt">4.Everyone should know what to do if an accident were to happen.style="background: white; margin: 0cm 0cm 0pt 10.55pt; text-indent: -10.55pt; line-height: 18.75pt">5.Learning about first aid is the best way to make sure that we will not have to feel that we could have done more.style="background: white; margin: 0cm 0cm 0pt 10.55pt; text-indent: -10.55pt; line-height: 18.75pt">6.If a person is bleeding badly , you must try to stop the bleeding .style="background: white; margin: 0cm 0cm 0pt 10.55pt; text-indent: -10.55pt; line-height: 18.75pt">7.If you think that someone may have been poisoned , you should do the following.