come,get,give,go,keep,let,make,put,seem,take,be,do,have,say,see,send
一般现在时：主语如果是I, we, you, they ，谓语动词用原形；主语如果是第三人称单数he, she, it，
谓语动词用第三人称单数形式。 以come为例：
I/You/We/they come here. He/She/It comes here.
一般过去时：谓语动词用过去式（除be的过去式was/were有人称和数的变化，其它动词的过去式无
人称和数的变化）。 以come为例：
I/You/We/they/ He/She/It came home at 9:00 last night.
其它动词的过去式：
get-got; give-gave; go-went; keep-kept; let-let; make-made; put-put; seem-seemed;
take-took; be-was/were; do-did; have-had; say-said; see-saw; send-sent
一般将来时：谓语动词由“will+动词原形”构成，这一结构适用于各种人称。 以come为例：
I/You/We/they/ He/She/It will come to the supermarket tomorrow morning.
