一般现在时
1)除单数第三人称外,谓语皆用动词原形表示,包括:
①经常(习惯性)的行为:He listens to the radio every day.
②现在的状态:They look fine.
③客观真理和事实:The earth goes around the sun.
常用时间状语;often,always,sometimes,usually,once aweek(month…),every day(year…),on Sunday等。
2)歌诀:
“是”有几变要记清,“am,is are”共 三种。
“do型”“单三”加s,其它一律用原形。
还有have和has,人称不可胡乱用。
表“有”还有there be,be要随着主语定。
现在经常反复事,主语能力或特征。
定律、规律和真理,“时、地、条件从句中”。
3)行前系(助)后
sometimes,usually,always,often常用于行为动词之前,系、助动词之后。如:He often walks very slowly.He doesn't often walk very slowly.He is often very angry.