Module3BodyLanguageandNon-verbalCommunicationSection2TheAnalysisoftheDifficultSentences1.Likeotheranimals,weareonguarduntilweknowitissafetorelax
与其他的动物一样,我们保持警惕,直到我们知道放松是安全的
“onguard”是介词短语,做表语
beonyourguard:tobecarefultoavoidbeingtrickedorgettingintoadangeroussituation
Youalwayshavetobeonyourguardagainstpickpockets
2.Ifourrighthandisbusygreetingsomeone,itcannotbeholdingaweapon
如果我们的右手在忙碌地迎接某人,它不可能握着一个武器
句子中“cannotbe-ing”表示推测:“应当不会……”,“想必不会……”例如:Hecan’tbeswimminginsuchweather
Atthemomentshemay(might)beplayingwithherschoolmates
情态动词间或也可以和一个动词的完成进行形式构成谓语,表示“应当一直在……”,“想必一直在……”这类意思
例如:Theyaresweatingallover
Theymusthavebeenworkinginthefields
Theymayhavebeendiscussingtheproblemthismorning
Shecouldn’thavebeenswimmingallday
3.Onepersonthenholdsuphishand,palmoutwardsandfivefingersspread
然后他举起他的手,手掌