（一）关于利弊、优缺点的句型：（Somesentencepatternscommonly-usedincontrolledwriting:）
1.S+have(orhas)alotofadvantagesover…(与…相比有许多优点)
ComparedwithB,Ahas(orhave)manyadvantages.
译：
1）英语好是她的长处。
ShehastheadvantageofgoodEnglish.
2.beofgreatbenefittosb./sth.(对…有益)
3.…benefitsb./sth.(对…有好处)
Benefitfromsth.(由于…而受益)
4.…do(alotof)goodtosb.(对…有许多好处)
…begoodforsb./sth.(对…有益)
…dodamagetosth.(对…造成损坏)
5.…beas(notso)goodas…,Whathedoesisnotsogoodaswhathesays.
6.…notsomuch…as…(与其说…,不如说….)
7.Itbenefitsusinmanyways/respects.
8.Doingsth.isbeneficialto…
9.While…hassomanyadvantages,weshouldnotignoretheproblemsitbringsus.
10.Justasacoinhastwosides,everythinghasitsadvantagesanddisadvantages.
（二）说明原因的句型：
1.Therearetwo/some/manygoodreasonsfor…/to…
【Example】Therearetworeasonsforthechangesinpeople’slivingconditions.First,wehave
beencarryingoutanopeningandreformpolicy.Second,ournationaleconomyisdeveloping
rapidlyandthebirthratehasbeenputundercontrol.
2.Wehavetwogoodreasonsfor…
【Example】Wehavemanygoodreasonstoobjecttosmokinginpublicplaces.
3.Thereasonfor…isthat+
【Example】ThereasonformybeinglatewasthatImissedthebus.
4.Severalfactorsareresponsibleforthephenomenon.
5.Theiropinionisbasedonthefactthat…
6.Thosewhoareinfavorofthe…believethat…
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