Question

用所給動(dòng)詞的正確形式填空

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(南極)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.考查時(shí)態(tài)，根據(jù)語(yǔ)境下午4點(diǎn)學(xué)生在操場(chǎng)上正在打籃球，用現(xiàn)在進(jìn)行時(shí)，直到天黑才回來(lái)，主句將來(lái)時(shí)從句用現(xiàn)在時(shí)。

2.考查時(shí)態(tài)，根據(jù)提示詞now第一個(gè)空用現(xiàn)在進(jìn)行時(shí)，根據(jù)in 1990，第二個(gè)空用一般過去時(shí)，根據(jù)時(shí)間狀語(yǔ)since then最后一個(gè)空用現(xiàn)在完成時(shí)。