新概念二册语法精粹 一、一般现在时一、一般现在时:
1.构成:使用动词原形,第三人称单数须有变化。
(1)直接加“s”, works,takes (2)以辅音加“y”结尾,变“y”为“i”,再加“es”, carry → carries (3)以“o, s, x, ch, sh”结尾的动词加“es”, goes dresses watches brushes 2.功能:
(1)表现在的事实、状态或动作:
eg: Birds fly.
She loves music. Mary's parents get up very early.
(2)表习惯性动作或职业,常与often,sometimes,usually,always,every week,seldom,occasionally,frequently等时间副词连用。
eg: I always take a walk after supper. She writes to me very often. Tom and his girlfriend go out to take a picnic occasionally.
(3)表客观真理,格言警句或事实:
The earth moves round the sun.
The sun rises in the east and sets in the west.
Two and two makes four. No man but errs. 人非圣贤,熟能无过。
(4)表将来:
A.在由when,after, before,as,as soon as,although,because,if,even if,in case,till,until,unless,so long as, where, whatever,wherever 等引导的状语从句中用一般现在时表将来发生的动作。
(黄金重点,所有考试都不放过它!)