Question

用所给动词的正确形式填空

1.It is four o’clock in the afternoon. Some students ________ ________ ( play) basketball on the playground . They  ________ ________ (not go ) home until it is dark.

2. Lin Tao ________ (be) a scientist now. He ________ (go)to the South Pole(南极)in 1990 for the first time. He ________ ________ ( know ) much more information (信息) about it since then.

 

Answer 1

【答案】

 

1.are playing， won’t go(aren’t going)                       

2. is， went， has known

【解析】

1.考查时态，根据语境下午4点学生在操场上正在打篮球，用现在进行时，直到天黑才回来，主句将来时从句用现在时。

2.考查时态，根据提示词now第一个空用现在进行时，根据in 1990，第二个空用一般过去时，根据时间状语since then最后一个空用现在完成时。