条件状语从句例句

引导条件状语从句最常用的连词是if,由if引导的条件状语从句表示在某种条件下某事很可能发生。如:
if
you
ask
him,
he
will
help
you.如果你请他帮忙,他会帮你的。
if
you
fail
in
the
exam,
you
will
let
him
down.如果你考试不及格,你会让他失望的。
另外,if从句还表示不可实现的条件或根本不可能存在的条件,也就是一种虚拟的条件或假设,从句多用一般过去时或过去完成时。如:
if
i
were
you,
i
would
invite
him
to
the
party.如果我是你,我会邀请他参加聚会。
i
would
have
arrived
much
earlier
if
i
had
not
been
caught
in
the
traffic.如果没有堵车,我会到的早一点儿。

请教高中英语零条件句，一条件句，二条件句，三条件句形式

零条件句If ice is heated,it melts.
第一条件句。如：I will tell him about it if he comes.
第二条件句If it rained tomorrow,I would not go out.
第三条件句是指和过去事实相反的虚拟条件句。

英语虚拟语气对现在 过去的否定是什么意思

你是问虚拟语气将过去时用于否定现在情况的句子是什么意思吗？
1. 表达一个建议。例：
I wouldnt do it if I were you.
2. 表达语气婉转的判断。例：
You would not be successful if you kept going in that direction.

英语简单陈述句造句..急!!在线等!!~~

Im watering the flowers in the garden now.
He played computer at home just now.
She was reading the book at school 1 hour ago.
Tom played the piano in class yesterday.
Jim called mom in the morning at home.