Question

It’ s suggested by experts that teenagers ____at least 30 minutes exercising, five times a week.

A．spend

B．to spend

C．spent

D．have spent

Answer 1

A

試題分析：suggest后的從句用虛擬語(yǔ)氣，should+do,should可省略。指advise, suggest, propose, recommend，demand, require, request等后的賓語(yǔ)從句，從句謂語(yǔ)由“should+動(dòng)詞原形”構(gòu)成，其中的should在美國(guó)英語(yǔ)中通�？梢允÷�
點(diǎn)評(píng)：本題難度適中。虛擬語(yǔ)氣是高考�？嫉膬�(nèi)容，需要考生熟記它們的各種情況，多記多練，還必須會(huì)分析理解句子的成分。
即學(xué)即練：It is strongly recommended that the machines____ every year.
A. check        B. should be checked       C. checked     D. shouldcheck
解析：B。句意：建議每年一定把機(jī)器檢修一次。