My mother goes shopping,______I must look after my little brother.A．soB．becauseC
题型：不详难度：来源：
| My mother goes shopping,______I must look after my little brother. |
答案
| A |
解析
试题分析：because 是从属连词，接表示直接原因的从句，一般放在主句的后面，也可放在主句前面，它表示的语气最强，在回答why的问句时，必须用because。as 是从属连词，说明一般的因果关系，语气比because弱，说明比较明显的原因，它引导的从句通常放在句首，有时也可放在句末。And是和的意思，表示并列或顺承；but表示转折，根据语境可知选择A.
点评：because只能放在句子中间,在它之前的是结果,后面的是原因. so做所以解释时也是放在句子中间,在它之前的是原因,后面的是结果. |
举一反三
| The dress fits me well, ______I don’t want to buy it because it’s too expensive. |
Don’t worry! I’ll send you an e-mail .| A．as soon as possible | B．as soon as possibly | | C．as soon as can | D．as quick as possible |
|
There’re too many clothes in the shop. I really can’t decide .| A．which to buy coat | B．to buy which coat | | C．which coat should I buy | D．which coat to buy |
|
－When did your father come back last night?
－He didn’t come back_________ he finished all the work. |
This desk is new , that one is old . |
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