unless和if引导的条件状语从句中，用一般现在时表将来，现在完成时表将来完成时。 if和unless引导的条件状语从句 if和unless的用...
unless\u548cif\u5f15\u5bfc\u7684\u6761\u4ef6\u72b6\u8bed\u4ece\u53e5\u4e2d,\u7528\u4e00\u822c\u73b0\u5728\u65f6\u8868\u5c06\u6765,\u73b0\u5728\u5b8c\u6210\u65f6\u8868\u5c06\u6765\u5b8c\u6210\u65f6\u3002\u5dee\u4e0d\u591a\u7684,\u4e3b\u5c06\u4ece\u73b0\u662f\u7528\u5728\u6761\u4ef6\u72b6\u8bed\u548c\u65f6\u95f4\u72b6\u8bed\u4e2d\u7684,if\u548cunless\u5f15\u5bfc\u7684\u6761\u4ef6\u72b6\u8bed\u4ece\u53e5\u800c\u5df2\u7b97\u662f\u5176\u4e2d\u4e00\u79cd;
\u4e3b\u5c06\u4ece\u73b0\u5e38\u89c1\u7684\u6709\u4ee5\u4e0b\u56db\u79cd\u60c5\u51b5:
\u4e00\u3001\u6761\u4ef6\u72b6\u8bed\u4ece\u53e5\u7684\u4e3b\u53e5\u662f\u4e00\u822c\u5c06\u6765\u65f6,\u90a3\u4e48\u4ece\u53e5\u5e38\u5e38\u7528\u4e00\u822c\u73b0\u5728\u65f6
\u5982:
When
I
grow
up,
I\u2019ll
be
a
nurse
and
look
after
patients
\u6211\u957f\u5927\u540e\u8981\u5f53\u4e00\u540d\u62a4\u58eb,\u7167\u987e\u75c5\u4eba
\u4e8c\u3001\u5982\u679c\u4e3b\u53e5\u662f\u7948\u4f7f\u53e5,\u90a3\u4e48\u4ece\u53e5\u901a\u5e38\u8981\u7528\u4e00\u822c\u73b0\u5728\u65f6
\u5982:Don\u2019t
laugh
at
me
when
I
make
a
mistake.
\u6211\u72af\u9519\u8bef\u7684\u65f6\u5019\u4e0d\u8981\u7b11\u8bdd\u6211\u3002
\u4e09\u3001\u5982\u679c\u4e3b\u53e5\u662f\u542b\u6709\u60c5\u6001\u52a8\u8bcd\u7684\u4e00\u822c\u73b0\u5728\u65f6,\u6839\u636e\u9700\u8981\u4ece\u53e5\u591a\u7528\u73b0\u5728\u8fdb\u884c\u65f6
\u5982:You
should
be
quiet
when
you
are
in
the
reading
room
\u5728\u9605\u89c8\u5ba4\u65f6\u5e94\u4fdd\u6301\u5b89\u9759
\u56db.
\u5982\u679cif\u7684\u6761\u4ef6\u72b6\u8bed\u4ece\u53e5\u9047\u5230\u53d8\u6362\u95f4\u63a5\u548c\u76f4\u63a5\u65f6
,
\u7948\u4f7f\u53e5\u5e94\u7528not
to....
\u5982;
She
said
not
to
close
the
window
\u5e38\u89c1\u7684\u65f6\u95f4\u72b6\u8bed\u4ece\u53e5\u7684\u8fde\u8bcd\u6709:as
soon
as,when,while
,as,until\u7b49
\u7528\u5728unless\u6216if\u4e2d\u53ef\u4ee5\u662f\u4e0b\u9762\u7684\u7528\u6cd5:
I
will
not
go
boating
if
it
rains
tomorrow.
Unless
you
have
finish
your
homework,
I
won't
allow
you
to
watch
TV.
IF\u662f\u5982\u679c\u7684\u610f\u601d\uff0c\u5982\u679c\u7ed3\u679c\u662f\u80af\u5b9a\u7684\u90a3\u4e48IF\u540e\u9762\u5f15\u5bfc\u7684\u4ece\u53e5\uff08\u4ece\u53e5\u5728\u4e3b\u53e5\u524d\u9762\u7528\u9017\u53f7\u9694\u5f00\uff09\u7528\u4e00\u822c\u73b0\u5728\u65f6\uff0c\u800c\u4e3b\u53e5\u4e5f\u7528\u4e00\u822c\u73b0\u5728\u65f6\u3002\u5982\u679c\u7ed3\u679c\u662f\u53ef\u80fd\u7684\u4e3b\u53e5\uff08\u4ece\u53e5\u7528\u4e00\u822c\u73b0\u5728\u65f6\uff09\u5c31\u7528\u4e00\u822c\u5c06\u6765\u65f6\u3002UNLESS\u76f8\u5f53\u4e8eIF
NOT\u5c31\u662f\u5982\u679c\u4e0d/\u9664\u975e\u7684\u610f\u601d\u7528\u6cd5\u548c\u521a\u624dIF\u7528\u7684\u4e00\u6837\u3002\u603b\u7ed3\uff1a\u7ed3\u679c\u662f\u80af\u5b9a\u7684\u5c31\u4e3b\u73b0\uff08\u5728\u65f6\uff09\u4ece\u73b0\uff08\u5728\u65f6\uff09\u7ed3\u679c\u662f\u53ef\u80fd\u7684\u5c31\u662f\u4e3b\u5c06\u4ece\u73b0\u5566\u3002\u65e0\u8bba\u7ed3\u679c\u662f\u80af\u5b9a\u7684\u6216\u53ef\u80fd\u7684\u4ece\u53e5\u90fd\u662f\u4e00\u822c\u73b0\u5728\u65f6\u800c\u53d8\u5316\u7684\u662f\u4e3b\u53e5\uff01\uff01\u901f\u8bb0\u554a\uff0c\u671b\u697c\u4e3b\u91c7\u7eb3\u54c8
\u6c42\u9876
主将从现
是用在条件状语和
时间状语
中的，if和unless引导的
条件状语从句
而已算是其中一种；
主将从现常见的有以下四种情况：
一、条件状语从句的主句是
一般将来时
，那么从句常常用
一般现在时
如：
When
I
grow
up,
I’ll
be
a
nurse
and
look
after
patients
我长大后要当一名护士，照顾病人
二、如果主句是
祈使句
，那么从句通常要用一般现在时
如：Don’t
laugh
at
me
when
I
make
a
mistake.
我犯错误的时候不要笑话我。
三、如果主句是含有情态动词的一般现在时，根据需要从句多用
现在进行时
如：You
should
be
quiet
when
you
are
in
the
reading
room
在阅览室时应保持安静
四.
如果if的条件状语从句遇到变换间接和直接时
,
祈使句应用not
to....
如;
She
said
not
to
close
the
window
常见的
时间状语从句
的连词有：as
soon
as,when,while
,as,until等
用在unless或if中可以是下面的用法：
I
will
not
go
boating
if
it
rains
tomorrow.
Unless
you
have
finish
your
homework,
I
won't
allow
you
to
watch
TV.
绛旓細寮曞鏉′欢鐘惰浠庡彞鐨勮繛璇嶆湁锛if锛堝鏋滐級锛寀nless锛堥櫎闈烇紱濡傛灉涓嶏級锛宎s long as锛堥櫎闈烇紱鍙锛夛紝supposing锛堝亣璁撅級锛宱n condition that锛堟潯浠舵槸锛锛宨n case锛堝鏋滐級銆備緥鍙ワ細You can't learn English well unless you work hard.闄ら潪浣犲姫鍔涘涔狅紝鍚﹀垯浣犲涓嶅ソ鑻辫銆俌ou can use my bike on condition th...
绛旓細if 涓unless 寮曞鏉′欢鐘惰浠庡彞鏃堕兘閬靛惊鈥濅富灏嗕粠鐜扳滃師鍒欙紝浠庡彞鐨勪竴鑸皢鏉ユ椂鐢ㄤ竴鑸幇鍦ㄦ椂浠ｆ浛锛屽嵆涓诲彞鐢ㄤ竴鑸皢鏉ユ椂/绁堜娇鍙ワ紝浠庡彞鐢ㄤ竴鑸幇鍦ㄦ椂銆傛湁鏃跺畠浠彲浜掓崲銆傚锛1.If you work hard, you will get good results .濡傛灉浣犲姫鍔涘涔狅紝浣犱細鍙栧緱濂芥垚缁┿=You won't get good results unless you work ...
绛旓細if unless until 寮曞鏉′欢鐘惰浠庡彞銆
绛旓細鏉′欢鐘惰浠庡彞锛氭潯浠剁姸璇粠鍙 瑕佺偣锛 琛ㄧず鐘惰浠庡彞鐢辫繛璇if, unless (=if not) 寮曞銆1.If it doesn鈥檛 rain tomorrow, we will go hiking.濡傛灉鏄庡ぉ涓嶄笅闆, 鎴戜滑灏卞幓杩滆冻.2.You will get good grades if you study hard.濡傛灉浣犲姫鍔涘涔,灏变細鍙栧緱濂芥垚缁.3.I will go to the party unless he ...
绛旓細IF鏄鏋滅殑鎰忔濓紝濡傛灉缁撴灉鏄偗瀹氱殑閭ｄ箞IF鍚庨潰寮曞鐨浠庡彞锛堜粠鍙ュ湪涓诲彞鍓嶉潰鐢ㄩ楀彿闅斿紑锛夌敤涓鑸幇鍦ㄦ椂锛岃屼富鍙ヤ篃鐢ㄤ竴鑸幇鍦ㄦ椂銆傚鏋滅粨鏋滄槸鍙兘鐨勪富鍙ワ紙浠庡彞鐢ㄤ竴鑸幇鍦ㄦ椂锛夊氨鐢ㄤ竴鑸皢鏉ユ椂銆UNLESS鐩稿綋浜嶪F NOT灏辨槸濡傛灉涓/闄ら潪鐨勬剰鎬濈敤娉曞拰鍒氭墠IF鐢ㄧ殑涓鏍枫傛荤粨锛氱粨鏋滄槸鑲畾鐨勫氨涓荤幇锛堝湪鏃讹級浠庣幇锛堝湪鏃讹級...
绛旓細1. if琛ㄧず鈥滃鏋溾濓紝寮曞鏉′欢鐘惰浠庡彞锛屼緥濡傗If it rains, we will stay at home.鈥濓紙濡傛灉涓嬮洦锛屾垜浠細鍛嗗湪瀹堕噷銆傦級2. until琛ㄧず鈥滅洿鍒扳濓紝寮曞鏃堕棿鐘惰浠庡彞锛屼緥濡傗淲e will stay at home until it stops raining.鈥濓紙鐩村埌闆ㄥ仠锛屾垜浠細鍛嗗湪瀹堕噷銆傦級3. unless琛ㄧず鈥滈櫎闈炩濓紝寮曞鏉′欢鐘惰浠庡彞锛...
绛旓細鏉′欢鐘惰浠庡彞鏄敱寮曞璇if浠ュ強unless绛夎瘝寮曞鐨鐘惰浠庡彞銆傚湪鑻辨枃涓紝鈥滄潯浠垛濇槸鎸囨煇涓浠朵簨鎯呭疄鐜颁箣鍚庯紙鐘惰浠庡彞涓殑鍔ㄤ綔锛夛紝鍏跺畠浜嬫儏锛堜富鍙ヤ腑鐨勫姩浣滐級鎵嶈兘鍙戠敓锛岄氬父璇戜綔鈥滃亣濡傗濄佲滃鏋溾濄傛敞鎰忥細鍦ㄥ惈鏈夋潯浠剁姸璇粠鍙ョ殑澶嶅悎鍙ヤ腑锛岃〃绀哄皢鏉ユ椂鎬侊紝涓诲彞鏄竴鑸皢鏉ユ椂鎬侊紝绁堜娇鍙ユ垨鎯呮佸姩璇嶏紝鏈夋椂涔熻兘鐢ㄧ幇鍦ㄦ椂...
绛旓細鏉′欢鐘惰浠庡彞鏉′欢鐘惰浠庡彞灏辨槸鐢ㄤ互琛ㄧず鈥滃湪鏌愮鏉′欢涓,浼氣︹︹濆父鐢╥f ,in case , on condition绛夎瘝鏉ュ紩瀵艰繛鎺ヨ瘝涓昏鏈 if, unless, as/so long as, on condition that 绛..if 寮曞鐨勬潯浠鍙ユ湁鐪熷疄鏉′欢鍙ュ拰闈炵湡瀹炴潯浠跺彞涓ょ.涓诲彞鐢ㄤ竴鑸皢鏉ユ椂,if鎴杣nless寮曞鐨勬潯浠剁姸璇粠鍙ョ敤涓鑸幇鍦ㄦ椂.鍥哄畾鎼厤unless = if...
