全国大众英语测验语法——通俗现在时的用法
1)常常性或习尚性的举措，常与默示频腮度的时候状语连用。
时候状语： every…, sometimes,at…, on Sunday
I leave home for school at 7 every morning.
2)客不雅观真理，客不雅观存在，迷信毕竟。
The earth moves around the sun.
Shanghai lies in the east of China.
3)默示格言或警语中。
Pride goes before a fall.傲卒多败。
留意：此用法如果出现在宾语从句中，即便主句是过往时，从句谓语也要用通俗现在时。
例：Columbus proved that the earth is round..
4)现在时候的状况、本领、性情、特征。
I don't want so much.
Ann Wang writes good English but does not speak well.
比较：Now I put the sugar in the cup.
I am doing my homework now.
第一句用通俗现在时，用于操作演示或指导申明的示范性举措，默示言行的瞬间举措。再如：Now watch me, I switch on the current and stand back.第二句中的now是举行时的标记，表斧正在举行的举措的客不雅观状况，所今后句用通俗现在时。