2017石家庄小升初英语10个必会高频知识点(2)
4、 时间介词
季节前,月份前用介词in。
如:in summer;in March
具体的哪一天如星期几,几月几日用介词on。
如:on Saturday; on the second of April; on Wednesday morning
在几点钟前用介词at。
如:at a quarter to four;
只在上下午晚上用in
如:in the morning/ afternoon/ evening;但在夜间用at night。
另:季节,月份和星期前不好加the.
5 、名词复数的构成方法
有规则的有:
(1)直接在名词后加s
如orange—oranges; photo—photos
(2) 以x, s, sh, ch 结尾的加es
如:box—boxes; glass—glasses; waitress—waitresses; watch—watches;peach--peaches
(3) 以辅音字母加y结尾的改y为i加es
如:study—studies;library—libraries; hobby—hobbies; family—families
(4)以f, fe结尾的改f, fe 为v+es
如:knife—knives; thief—thieves
(注:以o结尾的我们学过的只有mango加es, mango—mangoes其余加s,)
不规则的有:
man—men; woman—women; people—people; child—children