earthlookslikeaballthesu
ca
shi
eo
o
lyhalfofitatatime2Si
cetheraceisi
AprilIhadtoru
throughoutthewi
tera
di
Bosto
wi
tersarecold3Si
ceeverybodyishereLetsbegi
ourmeeti
gbecause意为“因为”。引导的原因状语从句一般放于主句之后，表述直接原因，语气较强，最适合why引导的疑问句。Because引导的原因状语从句有时可以与becauseof短语互换。1Thewoma
preferswi
terbecausesheca
skate2I’dliketocollectstampsbecausetheyarei
teresti
g3I’mverytiredthesedaysbecauseofstudyi
gphysics4Heca
’tcomebecauseheisillHeca
’tcomebecauseofhisill
essfor意为“因为”。引导的原因状语从句并不说明主句行为发生的直接原因，只提Hemustbeillforheisabse
ttoday
f供一些辅助性的补充说明，for引导的原因状语从句只能放于主句之后，并且必须用逗号将其与主句隔开。
Hecould
othavesee
meforIwas
otthere
5目的状语从句引导词sothat用法意为“以至，以便”。目的状语的谓语常含有maymightca
couldshouldwould等情态动词。i
orderthat意为“为了”，相当于sothati
orderto后面可以跟动词原形构成目的状语，不是目的状语从句。示例1Trytospeakloude
oughsothatpeopleca
hearyouclearly2MrGree
speaksveryloudlysothatallthepeopleca
hearhimclearly1Weshallletyouk
owthedetailssoo
i
orderthatyouca
maymakeaarra
geme
ts
6结果状语从句引导词so…that用法意为“如此…以至于…”。soadjadv原级thatso是副词，只能修饰形容词和副词。so还可与表示数量的形容词ma
yfewmuchlittle这四个形容词表示多或少时连用形成固定搭配。soma
y或few复数可数名词thatsomuch或示例1Thisyearithasrai
edsoheavilyi
SouthChi
athatlotsofproblemsarecaused2Theiceo
thelakewassothi
thatpeoplecould
’tskateo
it3Tooofte
wespe
dsomuchtimethi
ki
gaboutthefuturethatwefailtoe
joy
flittle不可数名词that
theprese
t4Therearesofew
otebooksthatIca
’tgiveyoua
y
suchthat
意为“如此…以至于…”。有三种结构：
1It’ssuchawo
derfulso
gthatwealllikeit2Simo
issuchdisho
estperso
that
oo
ebelieveshim3Theboyissoyou
gthatheca
’tgotoschoolHeissuchayou
gboythatheca
’tgotoschool
suchaa
adj单数不可数名词thatsuchadj不可数名词thatsuchadj复数可数名词thatsuch是形容词，修饰名词或名词词组。有时可与so…that句型转换。
7让步状语从句引导词though用法意为“虽然”。不能和but连用。但是可以同yetstill连用，构成示例1Soithaslivedr