小学英语必考40个重点知识点
2019-06-24 17:22
来源:互联网
作者:
规则的有:
(1)直接在动词后加ed
如:clean—cleaned; milk—milked; play—played;
(2)以e结尾的直接加d
如:dance—danced; taste—tasted;
(3) 以辅音字母加y结尾的改y为i加ed
如:study—studied;carry—carried;
(4)双写词尾加ed
如:stop—stopped; jog—jogged;
不规则的有:
am,is—was; are—were; do,does—did; have,has—had; go—went; meet—met; sit—sat; see—saw; get—got; tell—told; run—ran; come—came; steal—stole; read—read;
19.形容词副词比较级的构成
规则的有:
(1)直接在形容词或副词后加er
如;small—smaller; low—lower;
(2)以e结尾的加r
如:late—larer;
(3)双写词尾加er
如:big—bigger; thin—thinner; fat—fatter;
(4) 以辅音字母加y结尾的改y为i加er
如:heavy—heavier; early—earlier;
不规则的有:
good, well—better(最高级为best); many, much— more(最高级为most); far—farther或further(最高级farthest或furthest);
20.rain与snow的用法
(1)作为名词意思是雨水和雪是不可数名词
如:There is a lot of rain there in spring. 那儿的春天有很多雨水。
(2) 作为动词意思是下雨和下雪,有四种形式分别是:
动词原形rain;snow;
第三人称单数rains ;snows;
现在分词raining; snowing;
过去式rained;snowed;
如:①Look! It is raining now. 瞧!天正在下雨。
②It often rains in Nantong in summer.南通夏天经常下雨。
③ It rained yesterday.昨天下了雨。
④It is going to rain tomorrow. 明天要下雨。
(3)形容词为rainy 和snowy 意思是有雨的和有雪的
如:It is often rainy here in spring.这儿的春天经常是有雨的。
If it is rainy tomorrow, I’ll stay at home.如果明天是有雨的,我将呆在家里。
21. 比较级
注意只有同类事物才可进行比较。
如:My eyes are bigger than hers.
我的眼睛比她大。
Your school bag is heavier than mine.
你的书包比我的重。