由,常译为“因为”、“既然”,语气比because稍弱,通常置于句首,表示一种含有勉强语气的原因。?as是常用词,它表示的“原因”是双方已知的事实或显而易见的原因,或者理由不是很重要,含义与since相同,但语气更弱,没有since正式,常译为“由于,鉴于”。从句说明原因,主句说明结果,主从并重。Р____ he says so, it must be true.?___ it was late, I made haste to go.?The day breaks _______ the sun rises.?The day breaks, ___ the birds are singing.РsinceРAsРbecauseРforР2. Indeed, his sunburnt face and arms and his slim, strong body are just like those of millions of Chinese farmers, for whom he has struggled for the past five decades. (P10)?【分析】这是一个复合句,主句的主语是_____,like those of millions of Chinese farmers是介词短语作_____,for whom引导的定语从句修饰millions of Chinese farmers。?注意:关系代词位于介词之后,指人时要用whom,指物时要用which。?【仿写】的确,他的相貌举止很像他的哥哥,过去几年里他和哥哥一直在为邻居做好事?Indeed, his appearance and manners are _____, _____ good deeds for their neighbor in the past few years.