Lixs

Summer is vacation time.

夏季是度假的好时机。

I'll have studied English for four years next March.

到明年三月，我就学了四年的英语了。[将来完成时，表示将完成…，会做完…]

when they would be capable of providing information about traffic jams and suggesting alternative routes, when they would be used in hospitals to help doctors to diagnose illnesses, when they would relieve office workers and accountants of dull, repetitiv

计算机可以使办公室人员和会计免除那些枯燥、重复的劳动。