Question

英语IF的用法

Answer 1

if
还可以引导宾语从句

I
don't
know
if
he
will
come.

有时if
条件状语从句含有情态动词,不要误认为是将来时.例如

We
will
try
the
new
coat
on
you,if
you
will
like
it.

Answer 2

1、If
I
swim
every
day
this
summer,I
will
be
very
healthy.

2、What
will
you
buy
if
you
win
the
lottery
this
week?

在if引导的条件状语从句中用一般现在时表将来

unless=if
not