1.There_shouts for help from the river.A.are coming B.came C.did come D.comes为什么选B啊?这方面相关的语法也给我拓展下吧.2.It was 3 years since his grandfather_.A.had died B.had been dead C.has died D.died为什么选A啊?

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1.There_____shoutsforhelpfromtheriver.A.arecomingB.cameC.didcomeD.comes为什么选B啊?这方面相关的语法也给我拓展下吧.2.Itwa

1.There_____shouts for help from the river.A.are coming B.came C.did come D.comes为什么选B啊?这方面相关的语法也给我拓展下吧.2.It was 3 years since his grandfather_____.A.had died B.had been dead C.has died D.died为什么选A啊?
1.There_____shouts for help from the river.
A.are coming B.came C.did come D.comes
为什么选B啊?这方面相关的语法也给我拓展下吧.
2.It was 3 years since his grandfather_____.
A.had died B.had been dead C.has died D.died
为什么选A啊?这方面相关的语法也给我拓展下吧.我觉得是D啊,死不死一下子就死的吗- - 难道死还有过程,要过去完成时态,完成死亡- -

1.There_____shouts for help from the river.A.are coming B.came C.did come D.comes为什么选B啊?这方面相关的语法也给我拓展下吧.2.It was 3 years since his grandfather_____.A.had died B.had been dead C.has died D.died为什么选A啊?
1.here /there 构成的倒装句.如here comes the bus.车正驶来.(本句式无进行时)
本题只可能选项BD,根据句意B在此更好.
2.是since的一个用法问题...
It is ...since +v
如果是瞬间动词,表示动作并未结束；
如果是延续性动词,则表示动作已经结束.
It is ten years since I smoked.表示“我戒烟十年了”
It is ten years since I started smoking.则表示“我吸烟十年了”.
It is 5 years since I have lived here.(have lived是完成时对吧,完成时表示的是什么?过去发生,然后一直延续到现在,并对现在有影响,很明显,since 后面加的live就是延续性v.故直译为:自从我住在这儿已经5年了.
It is 5 years since I lived here.（live在这个地方,是瞬间动词,“ since I lived here”从我住在这的那一刻起,故反译为:我已经5年不住这儿了.

1.这是一个倒装句，原句为：
shouts for help came from the river
2.应用过去完成时态，表示“过去的过去”，died 在was 之前

1.There_____shouts for help from the river.A.are coming B.came C.did come D.comes为什么选B啊?这方面相关的语法也给我拓展下吧.2.It was 3 years since his grandfather_____.A.had died B.had been dead C.has died D.died为什么选A啊? f(1)+f(2)+f(3)+...+f(n)=n/n+1.求f(n) 如果函数f(x)满足：对任意实数a,b都有f(a+b)=f(a)f(b).且f(1)=1.则f(2)/f(1)+f(3)/f(2)…+f(2011)/f(2010)= f： %F. F f f 已知f(x)=3x的次方,求证1.f(a)×f(b)=f(a+b)2.f(a)÷f(b)=f(a-b) 设f是R+上的增函数,且f=f+f 1.求证f=f-f 2.若f=1且f＞f+2求a的范围已知f(x+y)=f(x)+f(y)+xY(x+y),f’(0)=1.求f(x). 如果f(1)=3.f(2)=5.f(3)=7.f(4)=9.f(1/3)=1.f(1/4)=2.f(1/5)=3.则f(2012)-f(1/2015)等于多少对于任意函数x、y,总有f(xy)-f(x)=f(y)(xy≠0）,求证1.f(1)=02.f(1/x)=-f(x)3.f(x/y)=f(x)-f(y) 如果函数y=f(x)的定义域为｛xlx>0}且f(x)为增函数,f(x)=f(x)+f(y)(1)求证：f(x除以y)=f(x)-f(y);(2)已知f(3)=1.且f(a)>f(a-1)+2,求a的取值范围等到十点 f(xy)=f(x)+f(y) 关于函数的1.已知f (x)在(－∞,＋∞)上是增函数,若a＋b≤0,则有A.f (a)+f (b) ≤－f (a) －f (b)B.f (a)+f (b)≥－f (a) －f (b)C.f (a)+f (b) ≤f (－a) ＋f (－b)D.f (a)+f (b)≥f (－a) ＋f (－b)2.如果f (1／x) =x/(1－x2) 对于任意整数x,y函数f(x)满足f(x+y)=f(x)+f(y)+xy+1.若f(1)=1.那么f(-8)等于? 1.对任意的正数函数f(x)满足f(xy)=f(x)+f(y),且f（8）=3,则f（2）=? 已知函数f(x)对一切x,y属于R都有f(x+y)=f(x)+f(y)+1.f(3)=a,f(12)=