SN4 ""

No	Pattern	Freq
1	it is [adj] that [noun prp]	450
2	it is [adj] that [noun pl]	417
3	it is [adj] that [noun sg]	381
4	it is clear that [noun]	217
5	it is true that [noun]	142
6	it is likely that [noun]	121
7	it is possible that [noun]	111
8	it is important that [noun]	100
9	it is unlikely that [noun]	70
10	it is essential that [noun]	55
11	it is [adj] that [n mass]	44
12	it is interesting that [noun]	42
13	it is probable that [noun]	38
14	it is evident that [noun]	34
15	it is vital that [noun]	32
16	it is obvious that [noun]	30
17	it is [adj] that people	29
18	it is [adj] that people	29
19	it is significant that [noun]	22
20	it is noteworthy that [noun]	20
21	it is [adj] that women	18
22	it is [adj] that woman	18
23	it is apparent that [noun]	17
24	it is inevitable that [noun]	12
25	it is imperative that [noun]	12
26	it is unfortunate that [noun]	12
27	it is [adj] that children	11
28	it is conceivable that [noun]	11
29	it is ironic that [noun]	11
30	it is [adj] that child	11