那就看以下例子吧:

　　1.Ishalltellhimthismatterwhenhecomes.

　　2.Theywillneverletyouknowuntilithappens.

　　3.Thedogwillsurelybeverysadifitssongetslost.

　　4.Toyswillbedirtyifyouputtheminthesands.

　　5.Lilywillneverknowthismatterifyoudon'ttellher.

　　6.Tom'sfatherwillhavetogotoDenmarkforabusinesstripafterheisbackfromAustralia.

　　7.Tonight'ssupperwillbeveryrichifdaddycomesbackearly.

　　8.TheGreenwillgotoSanFranciscoforaAutumntripwhenlittleGreenrecoversfromillness.

　　9.Tomorrowwillbeasunnydayifthemoonisbrighttonight.

　　10.AuntLucywillseeanewbabyaftershefinishesthisoperation.

　　11.Willyougowithustotheparkifmotheragreesso?

　　12.ShallweaskforchangingthisbooktoanewonewhenTeacherLifinishesthisclass?

　　13.WilltheWhitebehappyaftertheyseethislovelydog?

　　14.Studentswillnotgetgoodscoresiftheydon'tstudayhardfromthismomenton.

　　15.MyfatherwillnotagreetosignthisexampaperifIdon'tgivehisarightexplanation.

　　16.Thisbookwillnolongerbenewifyoumakethisuglydrawingonit.

　　17.Thebreakfastwillbenotfreshanymorewhenyougetbackfromthestationat11:00a.m..

　　18.Youwillnotbeabletoseethisbrightsunagainifyoudon'tprotectyoureyesinabetterway.

　　19.Ourfamilywillholdafamilymeetingafterwefinishsupper.

　　20.Grandmawillbeveryhappyifsheseesmeback.

　　太不容易了...

　　加油!