牛津版沪教版英语八年级(上)Unit 7 Memory 语法讲解+练习+答案.pdf

牛津版沪教版英语八年级(上)Unit7Memory语法讲解+练习+答案--第1页

牛津版沪教版英语八年级(上)Unit7

Memory语法讲解+练习+答案

Unit7Memory

GrammarXXX:nalAdverbialClauses。if…not=unless

AXXX。XXXinwhichonen(theverbinthesubordinate

clause)mustoccurbeforeanothern(theverbinthemainclause)

。Thesubordinateclausecancomebeforeorafterthe

mainclause(ifitcomesbefore。XXX).

1.XXX

XXXif.

1)Presenttenseinbothmainandsubordinateclauses

Structure:mainclause(presenttense)+ifclause(present

tense)

牛津版沪教版英语八年级(上)Unit7Memory语法讲解+练习+答案--第1页

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Usage:todescribenaturallaws。XXXwilldefinitelyXXX。

XXX:

Ifyoutakeafishoutofwater。itdies.

Ifyouputapieceofpaperintowater。itgetswet.

Ifyouputsaltintowater。itdisappears.

Ifyouheatice。itturnsintowater.

Steamturnsintowaterifyoucoolit.

Oilfloatsifyoupouritonwater.

2)Futuretenseinmainclause。presenttenseinsubordinate

clause。imperativemoodinmainclause。presenttensein

subordinateclause。modalverbinmainclause。XXX

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Structure:mainclause(XXX)+ifclause(presenttense)

Usage:totalkaboutpossibleXXX:

IllbuyacarifIhaveXXX.

TheywontgooutifitrainsXXX.

Becarefulwhenyoucrosstheroad.

Youwillnotarrivethereintimeifyoudontstartearlier。=

Unlessyoustartearlier。youwillfailtoarrivethereintime.

你要是不早点出发，就赶不上时间了。

XXXyouaskforn。=

Pleasedonteat