18.一般现在时 一般现在时表示现在的状态,如:He is 12. She is at home. 表示经常的或习惯性的动作,如:I go to school at 7:30 every day. 表示主语具备的性格和能力等,如:She likes apples. They know English. 1)动词be 肯定式 | | I am.... You are.... He/She/It is.... We/You/They are.... | I am not.... You are not.... He/She/It is not.... We/You/They are not.... |
疑问式和简略答语 Am I....? Yes, you are. No, you are not. Are we....? Yes, we/you are. No, we/you are not | Are you....? Yes, I am. No, I am not. Are you....? Yes, we are. No, we are not. | Is he/she/it....? Yes, he/she/it is. No, he/she/it is not. Are they....? Yes, they are. No, they are not. |
2)动词do 肯定式 | | I like.... You like.... He/She/It likes.... We/You/They like.... | I do not (don’t) like.... You do not (don’t) like.... He/She/It does not (doesn’t) likes.... We/You/They do not (don’t) like.... |
疑问式和简略答语 Do I like oranges? Yes, you do. No, you do not(don’t) Do we like oranges? Yes, we/you do. No, we/you do not(don’t) | Do you like oranges? Yes, I do. No, I do not(don’t) Do you like oranges? Yes, we do. No, we do not(don’t) | Does he/she/it like oranges? Yes, he/she/it does. No, he/she/it does not. Do they like oranges? Yes, they do. No, they do not(don’t) |
当主语是第三人称单数时,动词形式有以下几种变化: 规则 | | | 一般动词在词尾加-s,在清辅音后读/s/,在 浊辅音或元音后读/z/,在t后读/ts/,在d 后读/ds/。 | help like swim listen know play get find | helps /helps/ likes /laiks/ swims /wimz/ listens /’lisənz/ knows /nəʊz/ plays /pleiz/ gets /gets/ finds /faindz/ | 以字母s, x, sh, ch结尾的动词加-es, 读/iz/。如果动词原形词尾已有e,则加s。以o结 尾的动词也加-es,读/z/。 | | | 以辅音字母加y结尾的动词,先边y为i, 再加-es,读/z/。 | | |
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