Question

9．The little girldidn't stop crying until her mother came back．（直到她妈妈回来才停止哭）．（until）

Answer 1

分析 didn't stop crying until her mother came back．

解答 答案：didn't stop crying until her mother came back．这里是说过去的事情应用一般过去时，要表达直到…才用not…until，停止做某事用stop doing sth，stop是实意动词，故借助于did构成否定句，哭cry，故didn't stop crying，从句中主语是her mother，回来come back，过去式came back，故答案是didn't stop crying until her mother came back．

点评 本题是not…until的应用，这里是主句从句都用过去时，但如果主句用将来时则从句用一般现在时，如：I won't go to bed until my mother comes back