文档介绍：
用法索引
，常与表示频率的时间状语连用。
时间状语： every…，sometimes， at…，on Sunday
I leave home for school at 7 every morning.
、客观存在、科学事实。
The earth moves around the sun.
Shanghai lies in the east of China.
。
Pride goes before a fall. 骄者必败。
请你注意：
此用法如果出现在宾语从句中，即使主句是过去时，从句谓语也要用一般现在时。
例：Columbus proved that the earth is round.
、能力、性格、个性。
I don’t want so much.
Ann Wang writes good English but does not speak well.
用法索引
。常和now，Look！Listen！或其他铺垫句及情景设置句连用。
am reading a book now.
！They are having a basketball match.
！He is playing the piano.
’s 7：00 Greens are watching TV.
。
is working in a shoe factory these days.（临时性的工作）
is writing another novel. （说话时并未在写，只处于写作的状态。）
。即用现在进行体表示将来要发生的动作。但一般要与将来时间连用，而且仅限于少量动词。例如： come，go，start，arrive，leave，stay等。
is leaving for London tomorrow.
Eg2 Are you staying here till next week？
。例如： get，grow，become，turn，，begin等。
leaves are turning red.
’s getting warmer and warmer.
用法索引
。常用的时间状语：already，get，never，just，before，recently，for+一段时间，since+一段时间
I have lost my key