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)
体坛英语资讯:German midfielder Frings to miss two World Cup qualifiers
体坛英语资讯:Grafites hat-trick shoots down Schalke
体坛英语资讯:Ballesteros offers thanks for his cancer recovery
体坛英语资讯:Cannavaro plays waiting game with Real Madrid
体坛英语资讯:Dortmund extend contract with coach Klopp
体坛英语资讯:Late Riera goal gives Spain key win in Turkey
体坛英语资讯:Jackson sets new world record in womens 400m freestyle
体坛英语资讯:Serena wins WTA Player of the Year award
体坛英语资讯:Valencia striker Villa drops Barcelona hint
体坛英语资讯:China leads at curling world championship
体坛英语资讯:Injured Kaka stays behind in Brazil to recuperate
体坛英语资讯:Mourinho under fire for latest outburst
体坛英语资讯:First half blitz sees Barcelona into last eight of Champions League
体坛英语资讯:Nets suspend center Williams for 2 days after arrest
体坛英语资讯:Maradona summons Argentine squad for WC qualifier
体坛英语资讯:Bayern, Wolfsburg narrow gap with Bundesliga leaders Berlin
体坛英语资讯:Liverpool revive title hopes after 4-1 win at Man. Utd
体坛英语资讯:Lakers star Kobe sued by housekeeper
体坛英语资讯:Messi rejects all chance of Real Madrid move
体坛英语资讯:Washington Capitals extend home record
体坛英语资讯:Nadal, Murray make fourth round at Miami tennis
体坛英语资讯:Chinese Guo wins womens keirin in track cycling worlds
体坛英语资讯:Ronaldo to sit out Corinthians next game after flying start
体坛英语资讯:Federer, Djokovic could play Davis Cup in South African this year
体坛英语资讯:President of the Uruguayan Soccer Association resigns
体坛英语资讯:China wins four titles in Diving World Series
体坛英语资讯:Bremen sweeps Stuttgart 4-0
体坛英语资讯:Real Madrids Raul remains calm over possible return to intl duty
体坛英语资讯:Brueckner definitively ends his career as soccer coach
体坛英语资讯:Terry late winner keeps England on course for World Cup
不限 |
英语教案 |
英语课件 |
英语试题 |
不限 |
不限 |
上册 |
下册 |
不限 |