中考英语重要短语的用法及区别:whether,if
这两个连词都作“是否”解,引导宾语从句时,两者通常可以互换。
但在下列几种情况下,不可用if 代替whether。
1)当whether 与or not连成词组时。
I don't know whether or not they will come for our help.我不知道他们是否来帮助我们。
2)whether 用在不定式前面时。
She hasn't decided whether to go or not.她还没有决定去还是不去。
3)whether引导的从句放在句首时。Whether this is true or not,I can't say.这是不是真的,我不说(或我说不准)
Death toll rises in Sichuan coal mine explosion
More must be done to boost China's soft power
London Marathon won't be canceled
Death toll reaches 26 in Baoxing
Domestic violence by men 'shocking': survey
Hunt continues for survivors of Bangladesh building collapse
Home truths concerning Detroit's cheap housing
Chinese soldiers clear mines, win hearts
Apple losing its sweetness, edge?
Beijing cabbies fear loss of business
Django Unchained returns to cinemas
Anhui tightens rules covering historic buildings
Rule sealing juvenile records may be revised
No 'superbug' gonorrhea detected
Man jailed for pirating Mo's works
Voyage to Mars has its skeptics
Copyrights take a bite out of Apple
Tainted rice scandal hits Guangzhou eateries
McGrady back in NBA with Spurs
Buyers lured by local goods
Shanghai shops closed in fake mutton scandal
Monorail to ease Shanghai's congestion
China Unicom sees profit surge
Thirteen arrested for mall rumors
Brothers burned by boy while copying TV scene
Truck driver's organs save five lives in Wuhan
Customers not warm on charity coffee
Volunteer team helping students find sense of normalcy
Netizens question young official's 'rocket promotion'
34 detained for attack on police, govt workers
| 不限 |
| 英语教案 |
| 英语课件 |
| 英语试题 |
| 不限 |
| 不限 |
| 上册 |
| 下册 |
| 不限 |