几道道英语选择题1.It rained last night,------the ground is wet this

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几道道英语选择题
1.It rained last night,------the ground is wet this morning.
A.for B.because C.since D.as
2.-----it is raining,we had better stay indoors,doing some reading.
A.Because B.For
C.Since D.As for the fact
3.He kept working outdoors ______ it was snowing hard.
A.since B.as
C.even though D.while
请具体说一下几个表原因的区别~什么~表推测出来的原因~表直接原因~表间接原因有些搞不明白~

第一题:for:表示逻辑上的原因或是倒因果的说法.
because:表真正的原因,自然或是道德上的原因.
eg:正;The day beaks for the birds are singing.
误:The day beaks because the birds are singing.
鸟叫推断出天亮,而不是因为鸟叫而天亮.
题中的就属于倒因果的或是逻辑推断.
第二题:since表达双方已知的原因,所以问题的焦点不在since上,而在后面的建议"呆在家里".不可以作为强调句的一部分.
because强调原因,即原因是焦点.可作为强调句的一部分.

几道道英语选择题1.It rained last night,------the ground is wet this It rained last night,______the ground is wet. it must have rained last night,__the ground is wet this morn It must have rained last night,__ the ground is wet . The ground is so wet,It must have rained last night The ground is wet ,so it must have rained last night,（ It _________have rained last night, for the ground is wet. A 英语翻译It must have rained last night ,for the road is wet this it must have rained last night,_____the ground is wet here a Since the ground is wet,it _____ last night. The sports ground is wet,for it ------- last night. the ground isn't wet,it -----last night A can't have rained