题目内容
4.John always ______ others when they are in trouble.( )| A. | help | B. | was helping | C. | helps | D. | helped |
分析 当别人遇到困难的时候,约翰总是帮助他们.
解答 答案:C
根据"always"和"when they are in trouble"可知,这句话的时态为一般现在时.因主语为"John",所以谓语动词应该用单数形式,答案为C helps
点评 做这道题时要先判断出句子的时态,然后根据选项选出正确答案.
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