|
');
(window.slotbydup=window.slotbydup || []).push({
id: '8096091',
container: s,
size: '580,90',
display: 'inlay-fix'
});
})();
只能用whether： ①在具有选择意义，又有or或or not时，尤其是直接与or not连用时，往往用whether(if…or not也可以使用)。Let me know whether /if he will come or not.=Let me know whether or not he will come.让我知道他是否能来。I don't know whether /if he does any washing or not.=I don't know whether or not he does any washing.我不知道他洗不洗衣服。I wonder whether we stay or whether we go.我不知道我们是去还是留。 ②在介词之后用whether。I'm interested in whether he likes English.我关心的是他是否喜欢英语。We're thinking about whether we can finish the work on time.我们正在考虑是否能按时完成这项工作。I worry about whether I hurt her feelings.我担心是否伤了她的感情。 ③在不定式前用whether。He hasn't decided whether to visit the old man.他尚未决定是否拜访那位老人。I don't know whether to go.我不知去否。He hasn't decided whether to go by bus or by train.他还未决定是乘公共汽车去还是坐火车去。 ④whether置于句首时，不能换用if。Whether this is true or not，I can't say.这是否真的我说不上来。 ⑤引导主语从句和表语从句时宜用whether。Whether she will come or not is still a question.她是否能来还是个问题。The question is whether we can catch the bus.问题是我们能否赶上公共汽车。 ⑥若用if会引起歧义时，则用whether。Please let me know if you like the book. 可理解为：a.Please let me know whether you like the book.请告诉我你是否喜欢这本书。 b.If you like the book，please let me know.你如果喜欢这本书，请告诉我。 (责任编辑：admin) |