y,itisverydifficultforgiantpandastosurviveinthewild.→survive=continuetolive
〈知识链接〉sadly置于句首时表示对某件事情感到惋惜、难过。类似的有luckily,unluckily,hopefully。
Itis+形容词+是形式主语,而动词不定式是真正主语。
ItisnecessaryforOxformTrailwalkerstosupporteachotherduringthecharitywalk.
earisindanger,itwillattackpeople.如果熊处于危险中,它就袭击人。
rswillliveasafamilyiftheyhavebabies.如果老虎生了虎崽,就生活在一个家庭里。
rswillliveasafamilyuntilbabytigersare2-3yearsold.
⑴Sheslepttill/untilnine.=Shestoppedsleepingatnine.她一直睡到九点钟。
⑵Shedidn’tgotosleeptill/untilnine.=Shestartedsleepingatnine.她九点钟才开始睡觉。
till/until直到…时为止,not…until…直到…才…,till/until后接短语或从句。
till/until用在肯定句中时通常表示动作的终点,用在否定句中时则表示动作的起点。
Theytalkeduntildawn.
Theydidnotreturnhomeuntil10:00.
③Ididn’ncledidn’tgetmarrieduntilhewas35.
④—Washisfatherverystrictwithhim?
—dneverpraisedhimuntilhebecameoneofthetopstudentsinhisgrade.
Theythetrainuntilitdisappearedinthedistance.
edat
〈知识链接〉当until从句与肯定的'主句连用时,主句的谓语动词必须是延续性动词;与否定的主句连用时,主句的谓语动词必须是非延续性动词。Don’tgetoffuntilithasstopped.
lookedlovelyonme.=Ilookedlovelyinthem.注意介词on/in的使用(p69)
〈知识链接〉Sthlooklovelyonsb.=Sblooklovelyinsth.某物穿/戴在某人身上很漂亮。
onebuysfurs,thenpeoplewon’tkillwildanimalsanymore.
〈知识链接〉furs毛皮制品(可数名词),fur毛皮(不可数名词),如:animalfur兽皮
umberisgettingsmallerandsmallerbecausemanyoftheirlivingareasarebecomingfarmland.
因为它们的许多生存地逐渐变成农田,它们的数量变得越来越少。(p71)
〈知识链接〉thenumberof+名词复数,“…的数量/数目”,thenumber是中心词,而of短语是对它的限制,因此其谓语动词必须用单数。当表示“多”、“少”时用large/big和small。anumberof+名词复数,表示“许多、若干”=many,alotof。anumberof并不是中心词,而是不定数量词,如同alotof,lotsof,many,some。因此,anumberof+名词复数作主语时,其谓语动词用复数。
①Thenumberofpeopleinvitedwas60,butanumberofthemwereabsentfordifferentreasons.
②Therewerealargenumberofpeopleinthehall.
③Anumberofpeoplehaveappliedforthejob.
④Chineseisspokenbythelargestnumberofpeopleintheworld.世界上说汉语的人最多。
⑤Thenumberofthestudentsinourclassis70.=Thereare70studentsinourclass.
⑥ThenumberofChineseismuchlargerthanthatofGreatBritain.
rriveatnoon,Iwillseethefeedingofanimals.(p65)
〈知识链接〉atnoon=attwelveo’clock在正午,inthemiddleoftheday在中午