这种句型如介词前有行为动词do，后面应接不带to的不定式；如无do，则接带to的不定式.
Theenemysoldiershadnochoicebuttogivein.
Howhappilythebabylives，itdoesnothingbuteat，sleepandplay.
Facedwithdisasters，thereisnothingforustodobutkeepupourcourageandtakeaction.
Incoldwinter，mostcold-bloodedanimalshavenochoicebuttoliedownandsleep.
Hadbetter/bestdo….最好干…..
Whenhurricaneiscoming，you’dbetterstayindoor.
Nowthatyouhavebeenboredwiththelifeinthecountryside，you’dbettergotothecitiestoseekmorechances.
Prefertodoratherdo….愿意干….而不愿意干….
Wouldratherdothando=woulddoratherthando……
Ratherthanrideonacrowdedbus，healwayspreferstorideabicycle.
I’dratherreadsomethingathomethangototheparkinsuchweather.
Cannotbut，/cannothelpbut，/cannotchoosebut+do不得不….；只好…..
Wecouldnotbutweepatourbadluck.
It’sraininghard.Icannothelpbutstayathome.
Beingendangered，mostanimalcannotchoosebutwantfortheirdestiny.
Therebe句型表示什么地方有…..
52.注意：therebe之后如有几个并列主语时，用is或are取决于第一个主语是单数还是复数，单数用is，复数用are.
Thereisapen，apencilandtwobooksonthedesk.
Thereareseveralstudentsplayingontheplayground.
TherewillbeanimportantconferencenamedTheEarthSummittobeheldhere.
Therehavebeengreatchangesinmyhometowneversince1978.
Theremustbesomethingwrongwiththecellphone.
注意：therebe句型也可以有其它形式变化，常见的有seemtobe，happentobe，appeartobe，usedtobe，islikelytobe
Thereseems/appearstobemuchhopeofourteamwinningthematch.
Thereislikelytobemoredifficultiesthanexpectedwhilecarryingouttheexperiment.
Thethiefbrokein，tohisdelight，therehappenedtobenobodyintheroom.
注意therebe句型中的be动词，也可以替换成其它词，常见的有live，remain，come，stand，lie，occur，exist，follow等动词.
Oncetherelivedmanydinosaursheremillionsandmillionsofyearsago.
Therestandsaskyscraperinfrontourteachingbuilding.
Therecameatimewhenmostofpeoplehadnofreedomtospeak.
Thereoccurred/existedhumanbeingsabout5000yearsago.
Therefollowedadeadsilenceafterastrangenoise.
Thereexistseriousproblemsintheworldandweshouldtakeactiontosolvethembeforeitistoolate.
